iop_pits file has null values for depth

[aaarendt]

This caused my upload to fail before #114. Suggest deleting.

SnowEx20_SnowPits_GMIOP_20200204_8N37_LWC_v01.csv
::::::::::::::
# Location,Grand Mesa
# Site,8N37
# PitID,COGM8N37_20200204
# Date/Local Time,2020-02-04T10:30
# UTM Zone,12N
# Easting,745264
# Northing,4324166
# Top (cm),Bottom (cm),Avg Density (kg/m3),Permittivity A,Permittivity B,LWC-vol A (%),LWC-vol B (%)
NaN,NaN,146.5,NaN,NaN,nan,nan
NaN,NaN,187.0,NaN,NaN,nan,nan
NaN,NaN,274.5,NaN,NaN,nan,nan
NaN,NaN,267.0,NaN,NaN,nan,nan
NaN,NaN,312.5,NaN,NaN,nan,nan
NaN,NaN,305.5,NaN,NaN,nan,nan
NaN,NaN,296.0,NaN,NaN,nan,nan
NaN,NaN,318.5,NaN,NaN,nan,nan
NaN,NaN,316.5,NaN,NaN,nan,nan
NaN,NaN,328.5,NaN,NaN,nan,nan

[aaarendt]

Another: SnowEx20_SnowPits_GMIOP_20200204_9N42_LWC_v01.csv

# Location,Grand Mesa
# Site,9N42
# PitID,COGM9N42_20200204
# Date/Local Time,2020-02-04T12:40
# UTM Zone,12N
# Easting,745644
# Northing,4324255
# Top (cm),Bottom (cm),Avg Density (kg/m3),Permittivity A,Permittivity B,LWC-vol A (%),LWC-vol B (%)
NaN,NaN,112.5,NaN,NaN,nan,nan
NaN,NaN,171.0,NaN,NaN,nan,nan
NaN,NaN,206.0,NaN,NaN,nan,nan
NaN,NaN,261.0,NaN,NaN,nan,nan
NaN,NaN,259.0,NaN,NaN,nan,nan
NaN,NaN,281.0,NaN,NaN,nan,nan
NaN,NaN,281.0,NaN,NaN,nan,nan
NaN,NaN,293.5,NaN,NaN,nan,nan
NaN,NaN,328.0,NaN,NaN,nan,nan
NaN,NaN,310.5,NaN,NaN,nan,nan
NaN,NaN,322.5,NaN,NaN,nan,nan

[aaarendt]

SnowEx20_SnowPits_GMIOP_20200204_7N40_LWC_v01.csv

# Location,Grand Mesa
# Site,7N40
# PitID,COGM7N40_20200204
# Date/Local Time,2020-02-04T09:18
# UTM Zone,12N
# Easting,745516
# Northing,4324012
# Top (cm),Bottom (cm),Avg Density (kg/m3),Permittivity A,Permittivity B,LWC-vol A (%),LWC-vol B (%)
NaN,NaN,250.0,NaN,NaN,nan,nan
NaN,NaN,217.0,NaN,NaN,nan,nan
NaN,NaN,251.0,NaN,NaN,nan,nan
NaN,NaN,272.0,NaN,NaN,nan,nan
NaN,NaN,289.5,NaN,NaN,nan,nan
NaN,NaN,319.5,NaN,NaN,nan,nan
NaN,NaN,282.5,NaN,NaN,nan,nan
NaN,NaN,329.0,NaN,NaN,nan,nan
NaN,NaN,293.0,NaN,NaN,nan,nan
NaN,NaN,293.5,NaN,NaN,nan,nan

[aaarendt]

SnowEx20_SnowPits_GMIOP_20200204_9N43_LWC_v01.csv

# Location,Grand Mesa
# Site,9N43
# PitID,COGM9N43_20200204
# Date/Local Time,2020-02-04T14:00
# UTM Zone,12N
# Easting,745650
# Northing,4324097
# Top (cm),Bottom (cm),Avg Density (kg/m3),Permittivity A,Permittivity B,LWC-vol A (%),LWC-vol B (%)
NaN,NaN,142.5,NaN,NaN,nan,nan
NaN,NaN,188.0,NaN,NaN,nan,nan
NaN,NaN,227.5,NaN,NaN,nan,nan
NaN,NaN,279.0,NaN,NaN,nan,nan
NaN,NaN,293.0,NaN,NaN,nan,nan
NaN,NaN,305.5,NaN,NaN,nan,nan
NaN,NaN,335.0,NaN,NaN,nan,nan
NaN,NaN,353.5,NaN,NaN,nan,nan
NaN,NaN,350.0,NaN,NaN,nan,nan
NaN,NaN,338.5,NaN,NaN,nan,nan
NaN,NaN,322.5,NaN,NaN,nan,nan

[aaarendt]

SnowEx20_SnowPits_GMIOP_20200205_1N20_LWC_v01.csv

# Location,Grand Mesa
# Site,1N20
# PitID,COGM1N20_20200205
# Date/Local Time,2020-02-05T13:30
# UTM Zone,12N
# Easting,743281
# Northing,4324005
# Top (cm),Bottom (cm),Avg Density (kg/m3),Permittivity A,Permittivity B,LWC-vol A (%),LWC-vol B (%)
NaN,NaN,217.5,NaN,NaN,nan,nan
NaN,NaN,234.5,NaN,NaN,nan,nan
NaN,NaN,235.0,NaN,NaN,nan,nan
NaN,NaN,236.0,NaN,NaN,nan,nan

[aaarendt]

• SnowEx20_SnowPits_GMIOP_20200210_5N10_LWC_v01.csv
• SnowEx20_SnowPits_GMIOP_20200209_8C31_LWC_v01.csv
• SnowEx20_SnowPits_GMIOP_20200209_5C27_LWC_v01.csv
• SnowEx20_SnowPits_GMIOP_20200210_5N11_LWC_v01.csv