TData_products_V.py

# V
def voc_concentration(meta, mode, nc, ver):
   import TData_data as dat
   import TData_common as com
   import numpy as np
   
   [ET, DT, DoY] = dat.create_time(meta)
   [lat, lon] = dat.create_pos(ET, mode)
   
   [data_1d, flag_1d, min_dat, max_dat] = dat.create_data_flag(ET)
   
   # write common global attrib 
   com.global_attributes(nc, meta, ET, mode)
   
   # write specific global attrib
   nc.product_version = ver
      
   # write common dimensions
   com.dimensions(nc, ET, lat, lon)
   
   # write specific dimensions
   
   # write common variables
   com.variables(nc, ET, DT, DoY, lat, lon, mode) 
   
   # write specific variables
   v = nc.createVariable('mole_fraction_of_ethane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'nmol mol-1'
   v.standard_name = 'mole_fraction_of_ethane_in_air'
   v.long_name = 'Mole Fraction of Ethane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C2H6'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_fraction_of_ethane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'ppt'
   v.standard_name = 'mass_fraction_of_ethane_in_air'
   v.long_name = 'Mass Fraction of Ethane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C2H6'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_concentration_of_ethane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'mol m-3'
   v.standard_name = 'mole_concentration_of_ethane_in_air'
   v.long_name = 'Mole Concentration of Ethane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C2H6'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_concentration_of_ethane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'kg m-3'
   v.standard_name = 'mass_concentration_of_ethane_in_air'
   v.long_name = 'Mass Concentration of Ethane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C2H6'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_fraction_of_ethene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'nmol mol-1'
   v.standard_name = 'mole_fraction_of_ethene_in_air'
   v.long_name = 'Mole Fraction of Ethene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C2H4'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_fraction_of_ethene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'ppt'
   v.standard_name = 'mass_fraction_of_ethene_in_air'
   v.long_name = 'Mass Fraction of Ethene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C2H4'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_concentration_of_ethene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'mol m-3'
   v.standard_name = 'mole_concentration_of_ethene_in_air'
   v.long_name = 'Mole Concentration of Ethene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C2H4'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_concentration_of_ethene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'kg m-3'
   v.standard_name = 'mass_concentration_of_ethene_in_air'
   v.long_name = 'Mass Concentration of Ethene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C2H4'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_fraction_of_propane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'nmol mol-1'
   v.standard_name = 'mole_fraction_of_propane_in_air'
   v.long_name = 'Mole Fraction of Propane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C3H8'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_fraction_of_propane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'ppt'
   v.standard_name = 'mass_fraction_of_propane_in_air'
   v.long_name = 'Mass Fraction of Propane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C3H8'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_concentration_of_propane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'mol m-3'
   v.standard_name = 'mole_concentration_of_propane_in_air'
   v.long_name = 'Mole Concentration of Propane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C3H8'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_concentration_of_propane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'kg m-3'
   v.standard_name = 'mass_concentration_of_propane_in_air'
   v.long_name = 'Mass Concentration of Propane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C3H8'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_fraction_of_propene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'nmol mol-1'
   v.standard_name = 'mole_fraction_of_propene_in_air'
   v.long_name = 'Mole Fraction of Propene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C3H6'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_fraction_of_propene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'ppt'
   v.standard_name = 'mass_fraction_of_propene_in_air'
   v.long_name = 'Mass Fraction of Propene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C3H6'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_concentration_of_propene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'mol m-3'
   v.standard_name = 'mole_concentration_of_propene_in_air'
   v.long_name = 'Mole Concentration of Propene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C3H6'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_concentration_of_propene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'kg m-3'
   v.standard_name = 'mass_concentration_of_propene_in_air'
   v.long_name = 'Mass Concentration of Propene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C3H6'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_fraction_of_iso_butane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'nmol mol-1'
   v.long_name = 'Mole Fraction of iso-Butane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C4H10'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_fraction_of_iso_butane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'ppt'
   v.long_name = 'Mass Fraction of iso-Butane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C4H10'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_concentration_of_iso_butane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'mol m-3'
   v.long_name = 'Mole Concentration of iso-Butane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C4H10'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_concentration_of_iso_butane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'kg m-3'
   v.long_name = 'Mass Concentration of iso-Butane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C4H10'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_fraction_of_n_butane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'nmol mol-1'
   v.long_name = 'Mole Fraction of n-Butane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C4H10'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_fraction_of_n_butane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'ppt'
   v.long_name = 'Mass Fraction of n-Butane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C4H10'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_concentration_of_n_butane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'mol m-3'
   v.long_name = 'Mole Concentration of n-Butane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C4H10'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_concentration_of_n_butane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'kg m-3'
   v.long_name = 'Mass Concentration of n-Butane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C4H10'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_fraction_of_acetylene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'nmol mol-1'
   v.long_name = 'Mole Fraction of Acetylene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C2H2'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_fraction_of_acetylene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'ppt'
   v.long_name = 'Mass Fraction of Acetylene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C2H2'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_concentration_of_acetylene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'mol m-3'
   v.long_name = 'Mole Concentration of Acetylene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C2H2'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_concentration_of_acetylene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'kg m-3'
   v.long_name = 'Mass Concentration of Acetylene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C2H2'
   #write data
   v[:] = np.float32(data_1d)

   v = nc.createVariable('mole_fraction_of_iso_pentane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'nmol mol-1'
   v.long_name = 'Mole Fraction of iso-Pentane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C5H12'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_fraction_of_iso_pentane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'ppt'
   v.long_name = 'Mass Fraction of iso-Pentane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C5H12'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_concentration_of_iso_pentane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'mol m-3'
   v.long_name = 'Mole Concentration of iso-Pentane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C5H12'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_concentration_of_iso_pentane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'kg m-3'
   v.long_name = 'Mass Concentration of iso-Pentane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C5H12'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_fraction_of_n_pentane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'nmol mol-1'
   v.long_name = 'Mole Fraction of n-Pentane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C5H12'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_fraction_of_n_pentane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'ppt'
   v.long_name = 'Mass Fraction of n-Pentane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C5H12'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_concentration_of_n_pentane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'mol m-3'
   v.long_name = 'Mole Concentration of n-Pentane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C5H12'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_concentration_of_n_pentane_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'kg m-3'
   v.long_name = 'Mass Concentration of n-Pentane in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C5H12'
   #write data
   v[:] = np.float32(data_1d)  

   v = nc.createVariable('mole_fraction_of_isoprene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'nmol mol-1'
   v.standard_name = 'mole_fraction_of_isoprene_in_air'
   v.long_name = 'Mole Fraction of Isoprene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C5H8'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_fraction_of_isoprene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'ppt'
   v.standard_name = 'mass_fraction_of_isoprene_in_air'
   v.long_name = 'Mass Fraction of Isoprene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C5H8'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_concentration_of_isoprene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'mol m-3'
   v.standard_name = 'mole_concentration_of_isoprene_in_air'
   v.long_name = 'Mole Concentration of Isoprene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C5H8'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_concentration_of_isoprene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'kg m-3'
   v.standard_name = 'mass_concentration_of_isoprene_in_air'
   v.long_name = 'Mass Concentration of Isoprene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C5H8'
   #write data
   v[:] = np.float32(data_1d)  

   v = nc.createVariable('mole_fraction_of_benzene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'nmol mol-1'
   v.standard_name = 'mole_fraction_of_benzene_in_air'
   v.long_name = 'Mole Fraction of Benzene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C6H6'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_fraction_of_benzene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'ppt'
   v.standard_name = 'mass_fraction_of_benzene_in_air'
   v.long_name = 'Mass Fraction of Benzene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C6H6'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_concentration_of_benzene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'mol m-3'
   v.standard_name = 'mole_concentration_of_benzene_in_air'
   v.long_name = 'Mole Concentration of Benzene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C6H6'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_concentration_of_benzene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'kg m-3'
   v.standard_name = 'mass_concentration_of_benzene_in_air'
   v.long_name = 'Mass Concentration of Benzene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C6H6'
   #write data
   v[:] = np.float32(data_1d)   
   
   v = nc.createVariable('mole_fraction_of_toluene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'nmol mol-1'
   v.standard_name = 'mole_fraction_of_toluene_in_air'
   v.long_name = 'Mole Fraction of Toluene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C7H8'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_fraction_of_toluene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'ppt'
   v.standard_name = 'mass_fraction_of_toluene_in_air'
   v.long_name = 'Mass Fraction of Toluene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C7H8'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_concentration_of_toluene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'mol m-3'
   v.standard_name = 'mole_concentration_of_toluene_in_air'
   v.long_name = 'Mole Concentration of Toluene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C7H8'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_concentration_of_toluene_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'kg m-3'
   v.standard_name = 'mass_concentration_of_toluene_in_air'
   v.long_name = 'Mass Concentration of Toluene in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C7H8'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_fraction_of_acetaldehyde_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'nmol mol-1'
   v.long_name = 'Mole Fraction of Acetaldehyde in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C2H4O'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_fraction_of_acetaldehyde_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'ppt'
   v.long_name = 'Mass Fraction of Acetaldehyde in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C2H4O'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_concentration_of_acetaldehyde_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'mol m-3'
   v.long_name = 'Mole Concentration of Acetaldehyde in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C2H4O'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_concentration_of_acetaldehyde_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'kg m-3'
   v.long_name = 'Mass Concentration of Acetaldehyde in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C2H4O'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_fraction_of_methanol_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'nmol mol-1'
   v.standard_name = 'mole_fraction_of_methanol_in_air'
   v.long_name = 'Mole Fraction of Methanol in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'CH3OH'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_fraction_of_methanol_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'ppt'
   v.standard_name = 'mass_fraction_of_methanol_in_air'
   v.long_name = 'Mass Fraction of Methanol in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'CH3OH'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_concentration_of_methanol_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'mol m-3'
   v.standard_name = 'mole_concentration_of_methanol_in_air'
   v.long_name = 'Mole Concentration of Methanol in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'CH3OH'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_concentration_of_methanol_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'kg m-3'
   v.standard_name = 'mass_concentration_of_methanol_in_air'
   v.long_name = 'Mass Concentration of Methanol in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'CH3OH'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_fraction_of_acetone_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'nmol mol-1'
   v.long_name = 'Mole Fraction of Acetone in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C3H6O'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_fraction_of_acetone_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'ppt'
   v.long_name = 'Mass Fraction of Acetone in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C3H6O'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_concentration_of_acetone_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'mol m-3'
   v.long_name = 'Mole Concentration of Acetone in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C3H6O'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_concentration_of_acetone_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'kg m-3'
   v.long_name = 'Mass Concentration of Acetone in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C3H6O'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_fraction_of_dimethyl_sulfide_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'nmol mol-1'
   v.standard_name = 'mole_fraction_of_dimethyl_sulfide_in_air'
   v.long_name = 'Mole Fraction of Dimethyl Sulphide in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C2H6S'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_fraction_of_dimethyl_sulfide_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'ppt'
   v.standard_name = 'mass_fraction_of_dimethyl_sulfide_in_air'
   v.long_name = 'Mass Fraction of Dimethyl Sulphide in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C2H6S'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_concentration_of_dimethyl_sulfide_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'mol m-3'
   v.standard_name = 'mole_concentration_of_dimethyl_sulfide_in_air'
   v.long_name = 'Mole Concentration of Dimethyl Sulphide in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C2H6S'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_concentration_of_dimethyl_sulfide_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'kg m-3'
   v.standard_name = 'mass_concentration_of_dimethyl_sulfide_in_air'
   v.long_name = 'Mass Concentration of Dimethyl Sulphide in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'C2H6S'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_fraction_of_ethanol_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'nmol mol-1'
   v.standard_name = 'mole_fraction_of_ethanol_in_air'
   v.long_name = 'Mole Fraction of Ethanol in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'CH3CH2OH'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_fraction_of_ethanol_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = '1e-9'
   v.practical_units = 'ppt'
   v.standard_name = 'mass_fraction_of_ethanol_in_air'
   v.long_name = 'Mass Fraction of Ethanol in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'CH3CH2OH'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mole_concentration_of_ethanol_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'mol m-3'
   v.standard_name = 'mole_concentration_of_ethanol_in_air'
   v.long_name = 'Mole Concentration of Ethanol in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'CH3CH2OH'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('mass_concentration_of_ethanol_in_air', np.float32, ('time',), fill_value=-1.00e+20)
   #variable attributes
   v.units = 'kg m-3'
   v.standard_name = 'mass_concentration_of_ethanol_in_air'
   v.long_name = 'Mass Concentration of Ethanol in air'
   v.valid_min = np.float32(min_dat)
   v.valid_max = np.float32(max_dat)
   v.cell_methods = 'time: mean'
   v.coordinates = 'latitude longitude'
   v.chemical_species = 'CH3CH2OH'
   #write data
   v[:] = np.float32(data_1d)
   
   v = nc.createVariable('qc_flag_c2h6', np.int8, ('time',))
   #variable attribute
   v.units = '1'
   v.long_name = 'Data Quality Flag: C2H6'
   v.flag_values = '0b,1b,2b,3b,4b'
   v.flag_meanings = 'not_used' + '\n'
   v.flag_meanings = v.flag_meanings + 'good_data' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data<0.075' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data>0.925' + '\n'
   v.flag_meanings = v.flag_meanings + 'bad_data_do_not_use:_data=0' 
   #write data
   v[:] = np.int8(flag_1d)
   
   v = nc.createVariable('qc_flag_c2h4', np.int8, ('time',))
   #variable attribute
   v.units = '1'
   v.long_name = 'Data Quality Flag: C2H4'
   v.flag_values = '0b,1b,2b,3b,4b'
   v.flag_meanings = 'not_used' + '\n'
   v.flag_meanings = v.flag_meanings + 'good_data' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data<0.075' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data>0.925' + '\n'
   v.flag_meanings = v.flag_meanings + 'bad_data_do_not_use:_data=0' 
   #write data
   v[:] = np.int8(flag_1d)
   
   v = nc.createVariable('qc_flag_c3h8', np.int8, ('time',))
   #variable attribute
   v.units = '1'
   v.long_name = 'Data Quality Flag: C3H8'
   v.flag_values = '0b,1b,2b,3b,4b'
   v.flag_meanings = 'not_used' + '\n'
   v.flag_meanings = v.flag_meanings + 'good_data' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data<0.075' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data>0.925' + '\n'
   v.flag_meanings = v.flag_meanings + 'bad_data_do_not_use:_data=0' 
   #write data
   v[:] = np.int8(flag_1d)
   
   v = nc.createVariable('qc_flag_c3h6', np.int8, ('time',))
   #variable attribute
   v.units = '1'
   v.long_name = 'Data Quality Flag: C3H6'
   v.flag_values = '0b,1b,2b,3b,4b'
   v.flag_meanings = 'not_used' + '\n'
   v.flag_meanings = v.flag_meanings + 'good_data' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data<0.075' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data>0.925' + '\n'
   v.flag_meanings = v.flag_meanings + 'bad_data_do_not_use:_data=0' 
   #write data
   v[:] = np.int8(flag_1d)
   
   v = nc.createVariable('qc_flag_c4h10', np.int8, ('time',))
   #variable attribute
   v.units = '1'
   v.long_name = 'Data Quality Flag: C4H10'
   v.flag_values = '0b,1b,2b,3b,4b'
   v.flag_meanings = 'not_used' + '\n'
   v.flag_meanings = v.flag_meanings + 'good_data' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data<0.075' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data>0.925' + '\n'
   v.flag_meanings = v.flag_meanings + 'bad_data_do_not_use:_data=0' 
   #write data
   v[:] = np.int8(flag_1d)
   
   v = nc.createVariable('qc_flag_c2h2', np.int8, ('time',))
   #variable attribute
   v.units = '1'
   v.long_name = 'Data Quality Flag: C2H2'
   v.flag_values = '0b,1b,2b,3b,4b'
   v.flag_meanings = 'not_used' + '\n'
   v.flag_meanings = v.flag_meanings + 'good_data' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data<0.075' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data>0.925' + '\n'
   v.flag_meanings = v.flag_meanings + 'bad_data_do_not_use:_data=0' 
   #write data
   v[:] = np.int8(flag_1d)
   
   v = nc.createVariable('qc_flag_c5h12', np.int8, ('time',))
   #variable attribute
   v.units = '1'
   v.long_name = 'Data Quality Flag: C5H12'
   v.flag_values = '0b,1b,2b,3b,4b'
   v.flag_meanings = 'not_used' + '\n'
   v.flag_meanings = v.flag_meanings + 'good_data' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data<0.075' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data>0.925' + '\n'
   v.flag_meanings = v.flag_meanings + 'bad_data_do_not_use:_data=0' 
   #write data
   v[:] = np.int8(flag_1d)
   
   v = nc.createVariable('qc_flag_c5h8', np.int8, ('time',))
   #variable attribute
   v.units = '1'
   v.long_name = 'Data Quality Flag: C5H8'
   v.flag_values = '0b,1b,2b,3b,4b'
   v.flag_meanings = 'not_used' + '\n'
   v.flag_meanings = v.flag_meanings + 'good_data' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data<0.075' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data>0.925' + '\n'
   v.flag_meanings = v.flag_meanings + 'bad_data_do_not_use:_data=0' 
   #write data
   v[:] = np.int8(flag_1d)
   
   v = nc.createVariable('qc_flag_c6h6', np.int8, ('time',))
   #variable attribute
   v.units = '1'
   v.long_name = 'Data Quality Flag: C6H6'
   v.flag_values = '0b,1b,2b,3b,4b'
   v.flag_meanings = 'not_used' + '\n'
   v.flag_meanings = v.flag_meanings + 'good_data' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data<0.075' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data>0.925' + '\n'
   v.flag_meanings = v.flag_meanings + 'bad_data_do_not_use:_data=0' 
   #write data
   v[:] = np.int8(flag_1d)
   
   v = nc.createVariable('qc_flag_c7h8', np.int8, ('time',))
   #variable attribute
   v.units = '1'
   v.long_name = 'Data Quality Flag: C7H8'
   v.flag_values = '0b,1b,2b,3b,4b'
   v.flag_meanings = 'not_used' + '\n'
   v.flag_meanings = v.flag_meanings + 'good_data' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data<0.075' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data>0.925' + '\n'
   v.flag_meanings = v.flag_meanings + 'bad_data_do_not_use:_data=0' 
   #write data
   v[:] = np.int8(flag_1d)
   
   v = nc.createVariable('qc_flag_c2h4o', np.int8, ('time',))
   #variable attribute
   v.units = '1'
   v.long_name = 'Data Quality Flag: C2H4O'
   v.flag_values = '0b,1b,2b,3b,4b'
   v.flag_meanings = 'not_used' + '\n'
   v.flag_meanings = v.flag_meanings + 'good_data' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data<0.075' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data>0.925' + '\n'
   v.flag_meanings = v.flag_meanings + 'bad_data_do_not_use:_data=0' 
   #write data
   v[:] = np.int8(flag_1d)
   
   v = nc.createVariable('qc_flag_ch3oh', np.int8, ('time',))
   #variable attribute
   v.units = '1'
   v.long_name = 'Data Quality Flag: CH3OH'
   v.flag_values = '0b,1b,2b,3b,4b'
   v.flag_meanings = 'not_used' + '\n'
   v.flag_meanings = v.flag_meanings + 'good_data' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data<0.075' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data>0.925' + '\n'
   v.flag_meanings = v.flag_meanings + 'bad_data_do_not_use:_data=0' 
   #write data
   v[:] = np.int8(flag_1d)
   
   v = nc.createVariable('qc_flag_c3h6o', np.int8, ('time',))
   #variable attribute
   v.units = '1'
   v.long_name = 'Data Quality Flag: C3H6O'
   v.flag_values = '0b,1b,2b,3b,4b'
   v.flag_meanings = 'not_used' + '\n'
   v.flag_meanings = v.flag_meanings + 'good_data' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data<0.075' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data>0.925' + '\n'
   v.flag_meanings = v.flag_meanings + 'bad_data_do_not_use:_data=0' 
   #write data
   v[:] = np.int8(flag_1d)
   
   v = nc.createVariable('qc_flag_c2h6s', np.int8, ('time',))
   #variable attribute
   v.units = '1'
   v.long_name = 'Data Quality Flag: C2H6S'
   v.flag_values = '0b,1b,2b,3b,4b'
   v.flag_meanings = 'not_used' + '\n'
   v.flag_meanings = v.flag_meanings + 'good_data' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data<0.075' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data>0.925' + '\n'
   v.flag_meanings = v.flag_meanings + 'bad_data_do_not_use:_data=0' 
   #write data
   v[:] = np.int8(flag_1d)
   
   v = nc.createVariable('qc_flag_ch3ch2oh', np.int8, ('time',))
   #variable attribute
   v.units = '1'
   v.long_name = 'Data Quality Flag: CH3CH2OH'
   v.flag_values = '0b,1b,2b,3b,4b'
   v.flag_meanings = 'not_used' + '\n'
   v.flag_meanings = v.flag_meanings + 'good_data' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data<0.075' + '\n'
   v.flag_meanings = v.flag_meanings + 'suspect_data_data_not_quality_controlled:_data>0.925' + '\n'
   v.flag_meanings = v.flag_meanings + 'bad_data_do_not_use:_data=0' 
   #write data
   v[:] = np.int8(flag_1d)
   
   del dat, com, np, data_1d, flag_1d