diff --git a/docs/dir_structure.md b/docs/dir_structure.md
index b1c27c54f..7e0be16fb 100644
--- a/docs/dir_structure.md
+++ b/docs/dir_structure.md
@@ -8,12 +8,24 @@ $DATA_DIR/GalapagosSenDT128
 │   ├── 20141213_20141225
 │   │   └── 20141213_20141225.txt
 │   └── ...
-├── reference
-│   ├── data.rsc    #generated by prep_isce.py
-│   ├── IW1
-│   ├── IW1.xml
-│   ├── IW2
-│   └── IW2.xml
+├── ion
+│   ├── 20141213_20141225
+|   │   ├── ion_cal
+|   |   |   ├── filt.ion
+|   |   |   ├── filt.ion.vrt
+|   |   |   ├── filt.ion.xml
+|   |   |   ├── raw_no_projection.cor
+|   |   |   ├── raw_no_projection.cor.vrt
+|   |   |   ├── raw_no_projection.cor.xml
+|   |   |   ├── ...
+|   |   └── ...
+|   ├── 20141213_20150307
+|   └── ...
+├── ion_dates
+|   ├── 20141213.ion
+|   ├── 20141213.ion.vrt
+|   ├── 20141213.ion.xml
+|   └── ...
 ├── merged
 │   ├── geom_reference
 │   │   ├── hgt.rdr
@@ -55,6 +67,12 @@ $DATA_DIR/GalapagosSenDT128
 │       │   ├── ...
 │       ├── 20141213_20150307
 │       └── ...
+├── reference
+│   ├── data.rsc    #generated by prep_isce.py
+│   ├── IW1
+│   ├── IW1.xml
+│   ├── IW2
+│   └── IW2.xml
 ├── secondarys
 │   ├── 20141225
 │   │   ├── IW1
@@ -78,6 +96,9 @@ mintpy.load.baselineDir      = $DATA_DIR/GalapagosSenDT128/baselines
 mintpy.load.unwFile          = $DATA_DIR/GalapagosSenDT128/merged/interferograms/*/filt_*.unw
 mintpy.load.corFile          = $DATA_DIR/GalapagosSenDT128/merged/interferograms/*/filt_*.cor
 mintpy.load.connCompFile     = $DATA_DIR/GalapagosSenDT128/merged/interferograms/*/filt_*.unw.conncomp
+##---------ionosphere stack (optional):
+mintpy.load.ionUnwFile       = $DATA_DIR/GalapagosSenDT128/ion/*/ion_cal/filt.ion
+mintpy.load.ionCorFile       = $DATA_DIR/GalapagosSenDT128/ion/*/ion_cal/raw_no_projection.cor
 ##---------geometry datasets:
 mintpy.load.demFile          = $DATA_DIR/GalapagosSenDT128/merged/geom_reference/hgt.rdr
 mintpy.load.lookupYFile      = $DATA_DIR/GalapagosSenDT128/merged/geom_reference/lat.rdr
@@ -187,6 +208,8 @@ mintpy.load.baselineDir      = $DATA_DIR/KirishimaAlosAT424/baselines
 mintpy.load.unwFile          = $DATA_DIR/KirishimaAlosAT424/Igrams/*/filt_*.unw
 mintpy.load.corFile          = $DATA_DIR/KirishimaAlosAT424/Igrams/*/filt_*.cor
 mintpy.load.connCompFile     = $DATA_DIR/KirishimaAlosAT424/Igrams/*/filt_*.unw.conncomp
+##---------ionosphere stack (optional):
+mintpy.load.ionUnwFile       = $DATA_DIR/KirishimaAlosAT424/ionosphere/*/iono*.filt
 ##---------geometry datasets:
 mintpy.load.demFile          = $DATA_DIR/KirishimaAlosAT424/geom_reference/hgt.rdr
 mintpy.load.lookupYFile      = $DATA_DIR/KirishimaAlosAT424/geom_reference/lat.rdr
@@ -294,6 +317,9 @@ mintpy.load.baselineDir      = $DATA_DIR/NCalAlos2DT169/baseline
 mintpy.load.unwFile          = $DATA_DIR/NCalAlos2DT169/pairs/*-*/insar/filt_*-*_5rlks_28alks.unw
 mintpy.load.corFile          = $DATA_DIR/NCalAlos2DT169/pairs/*-*/insar/*-*_5rlks_28alks.cor
 mintpy.load.connCompFile     = $DATA_DIR/NCalAlos2DT169/pairs/*-*/insar/filt_*-*_5rlks_28alks.unw.conncomp
+##---------ionosphere stack (optional):
+mintpy.load.ionUnwFile       = $DATA_DIR/NCalAlos2DT169/pairs_ion/*-*/ion/ion_cal/filt_ion_*.ion
+mintpy.load.ionCorFile       = $DATA_DIR/NCalAlos2DT169/pairs_ion/*-*/ion/ion_cal/diff_*.cor
 ##---------geometry datasets:
 mintpy.load.demFile          = $DATA_DIR/NCalAlos2DT169/dates_res*/150408/insar/*_5rlks_28alks.hgt
 mintpy.load.lookupYFile      = $DATA_DIR/NCalAlos2DT169/dates_res*/150408/insar/*_5rlks_28alks.lat
diff --git a/src/mintpy/cli/modify_network.py b/src/mintpy/cli/modify_network.py
index bef24cae2..a9191cf94 100755
--- a/src/mintpy/cli/modify_network.py
+++ b/src/mintpy/cli/modify_network.py
@@ -121,9 +121,12 @@ def cmd_line_parse(iargs=None):
     inps.excludeIfgIndex = read_input_index_list(inps.excludeIfgIndex, stackFile=inps.file)
 
     # check: --ex-date(12) options
+    # and ignore , in the inputs
     if inps.excludeDate:
-        inps.exlcudeDate = ptime.yyyymmdd(inps.excludeDate)
+        inps.excludeDate = [x.replace(',', '') for x in inps.excludeDate]
+        inps.excludeDate = ptime.yyyymmdd(inps.excludeDate)
     if inps.excludeDate12:
+        inps.excludeDate12 = [x.replace(',', '') for x in inps.excludeDate12]
         inps.excludeDate12 = ptime.yyyymmdd_date12(inps.excludeDate12)
 
     # check: -t / --template option
diff --git a/src/mintpy/view.py b/src/mintpy/view.py
index 39ac2af85..569b776fe 100644
--- a/src/mintpy/view.py
+++ b/src/mintpy/view.py
@@ -206,13 +206,13 @@ def check_map_projection(inps, metadata, print_msg=True):
         msg = 'initiate cartopy map projection: '
         if inps.coord_unit.startswith('deg'):
             inps.map_proj_obj = ccrs.PlateCarree()
-            vprint(msg + 'PlateCarree')
+            print(msg + 'PlateCarree')
 
         elif inps.coord_unit.startswith('meter'):
             if 'UTM_ZONE' in metadata.keys():
                 utm_zone = metadata['UTM_ZONE']
                 inps.map_proj_obj = ccrs.UTM(utm_zone)
-                vprint(msg + f'UTM zone {utm_zone}')
+                print(msg + f'UTM zone {utm_zone}')
 
                 # check --lalo-label (works for PlateCarree only)
                 if inps.lalo_label: