diff --git a/.gitignore b/.gitignore
index e2c9619..86fe6ad 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,4 +4,6 @@ __git_version__.py
 *.pyc
 dist/*
 build/*
-*egg-info/*
\ No newline at end of file
+*egg-info/*
+.*
+run_sharppy.py
\ No newline at end of file
diff --git a/sharppy/sharptab/constants.py b/sharppy/sharptab/constants.py
index 7d7fe67..59891f0 100644
--- a/sharppy/sharptab/constants.py
+++ b/sharppy/sharptab/constants.py
@@ -88,5 +88,5 @@ def QC(val):
         1 if value is good
         0 if value is bad
     '''
-    if val < -998.0 or val > 2.0e5: return 0
+    if val < -998.0 or val > 2.0e5 or val == 999.0 or val == 9999.0 or val == 999.000 or val == 9999.000 or val == 99999.0: return 0
     return 1