NSA/MFRSR/C2 - No data collected during winter

The sun does not rise above the horizon at the NSA sites between November and January each 
year.  During this time period, the MFR instruments are removed and returned to PNNL for 
maintenance and calibration.  The instruments are generally re-installed in March.

• Narrowband Hemispheric Irradiance, Filter 4(hemisp_narrowband_filter4_raw)
• Diffuse Hemispheric Broadband Irradiance(diffuse_hemisp_broadband_raw)
• Dummy altitude for Zeb(alt)
• Logger panel temperature(logger_temp)
• Alltime Narrowband Hemispheric Irradiance, Filter 5(alltime_hemisp_narrowband_filter5)
• Diffuse Narrowband Hemispheric Irradiance, Filter 4(diffuse_hemisp_narrowband_filter4_raw)
• Alltime Narrowband Hemispheric Irradiance, Filter 3(alltime_hemisp_narrowband_filter3)
• Narrowband Direct Horizontal Irradiance, Filter 5(direct_horizontal_narrowband_filter5)
• Detector Temperature(head_temp)
• base time(base_time)
• Offset subtracted from upwelling hemispheric filter1 data(offset_filter1)
• Narrowband Direct Horizontal Irradiance, Filter 6(direct_horizontal_narrowband_filter6)
• Narrowband Diffuse Hemispheric Irradiance, Filter 4(diffuse_hemisp_narrowband_filter4)
• Narrowband Diffuse Hemispheric Irradiance, Filter 6(diffuse_hemisp_narrowband_filter6)
• Narrowband Hemispheric Irradiance, Filter 1(hemisp_narrowband_filter1)
• Diffuse Narrowband Hemispheric Irradiance, Filter 2(diffuse_hemisp_narrowband_filter2_raw)
• time(time)
• Narrowband Hemispheric Irradiance, Filter 6(hemisp_narrowband_filter6)
• Narrowband Diffuse Hemispheric Irradiance, Filter 3(diffuse_hemisp_narrowband_filter3)
• Narrowband Diffuse Hemispheric Irradiance, Filter 2(diffuse_hemisp_narrowband_filter2)
• Narrowband Hemispheric Irradiance, Filter 4(hemisp_narrowband_filter4)
• Narrowband Hemispheric Irradiance, Filter 3(hemisp_narrowband_filter3_raw)
• Alltime Hemispheric Broadband Irradiance(alltime_hemisp_broadband)
• Diffuse Narrowband Hemispheric Irradiance, Filter 3(diffuse_hemisp_narrowband_filter3_raw)
• Narrowband Hemispheric Irradiance, Filter 6(hemisp_narrowband_filter6_raw)
• Narrowband Diffuse Hemispheric Irradiance, Filter 1(diffuse_hemisp_narrowband_filter1)
• Data Logger Supply Voltage(logger_volt)
• Narrowband Hemispheric Irradiance, Filter 3(hemisp_narrowband_filter3)
• Narrowband Hemispheric Irradiance, Filter 2(hemisp_narrowband_filter2_raw)
• Hemispheric Broadband Irradiance(hemisp_broadband_raw)
• Diffuse Narrowband Hemispheric Irradiance, Filter 1(diffuse_hemisp_narrowband_filter1_raw)
• Offset subtracted from upwelling hemispheric filter3 data(offset_filter3)
• Narrowband Direct Horizontal Irradiance, Filter 3(direct_horizontal_narrowband_filter3)
• Narrowband Direct Horizontal Irradiance, Filter 4(direct_horizontal_narrowband_filter4)
• Diffuse Hemispheric Broadband Irradiance (Approximate), MFRSR(diffuse_hemisp_broadband)
• Narrowband Diffuse Hemispheric Irradiance, Filter 5(diffuse_hemisp_narrowband_filter5)
• Narrowband Hemispheric Irradiance, Filter 5(hemisp_narrowband_filter5)
• Direct Horizontal Broadband Irradiance, broadband scale applied(direct_horizontal_broadband)
• Offset subtracted from upwelling hemispheric filter2 data(offset_filter2)
• Diffuse Narrowband Hemispheric Irradiance, Filter 5(diffuse_hemisp_narrowband_filter5_raw)
• Hemispheric Irradiance, MFRSR(hemisp_broadband)
• lat(lat)
• Alltime Narrowband Hemispheric Irradiance, Filter 1(alltime_hemisp_narrowband_filter1)
• Offset subtracted from upwelling hemispheric filter4 data(offset_filter4)
• lon(lon)
• Narrowband Hemispheric Irradiance, Filter 1(hemisp_narrowband_filter1_raw)
• Alltime Narrowband Hemispheric Irradiance, Filter 6(alltime_hemisp_narrowband_filter6)
• Narrowband Direct Horizontal Irradiance, Filter 1(direct_horizontal_narrowband_filter1)
• Second Detector Temperature(head_temp2)
• Narrowband Hemispheric Irradiance, Filter 2(hemisp_narrowband_filter2)
• Offset subtracted from upwelling hemispheric filter6 data(offset_filter6)
• Offset subtracted from upwelling hemispheric filter5 data(offset_filter5)
• Offset subtracted from upwelling hemispheric broadband data(offset_broadband)
• Narrowband Direct Horizontal Irradiance, Filter 2(direct_horizontal_narrowband_filter2)
• Alltime Narrowband Hemispheric Irradiance, Filter 2(alltime_hemisp_narrowband_filter2)
• Narrowband Hemispheric Irradiance, Filter 5(hemisp_narrowband_filter5_raw)
• Alltime Narrowband Hemispheric Irradiance, Filter 4(alltime_hemisp_narrowband_filter4)
• Diffuse Narrowband Hemispheric Irradiance, Filter 6(diffuse_hemisp_narrowband_filter6_raw)

• Offset subtracted from upwelling hemispheric filter3 data(offset_filter3)
• Normalized filter function data, filter 5, wavelength value obtained during
  bench calibrations(wavelength_filter5)
• cosine correction, west to east, filter1(cosine_correction_we_filter1)
• Ratio of direct_normal_narrowband_filter1 to diffuse_hemisp_narrowband_filter1(direct_diffuse_ratio_filter1)
• Cosine correction applied to direct_horizontal_narrowband_filter5(computed_cosine_correction_filter5)
• cosine correction, south to north, filter3(cosine_correction_sn_filter3)
• cosine correction, west to east, filter2(cosine_correction_we_filter2)
• Direct Normal Narrowband Irradiance, Filter 5(direct_normal_narrowband_filter5)
• Narrowband Hemispheric Irradiance, Filter 3(hemisp_narrowband_filter3)
• Logger panel temperature(logger_temp)
• Diffuse Hemispheric Broadband Irradiance (Approximate), MFRSR(diffuse_hemisp_broadband)
• Offset subtracted from upwelling hemispheric filter1 data(offset_filter1)
• Direct Normal Narrowband Irradiance, Filter 4(direct_normal_narrowband_filter4)
• Normalized filter function data, filter 3, wavelength value obtained during
  bench calibrations(wavelength_filter3)
• Narrowband Diffuse Hemispheric Irradiance, Filter 2(diffuse_hemisp_narrowband_filter2)
• Offset subtracted from upwelling hemispheric filter4 data(offset_filter4)
• Nominal calibration factor, applied to filter2 data(nominal_calibration_factor_filter2)
• Normalized filter function data, filter 6, wavelength value obtained during
  bench calibrations(wavelength_filter6)
• Cosine correction of filter1 diffuse, assuming Rayleigh sky at 45 deg zenith
  angle(diffuse_correction_filter1)
• Offset subtracted from upwelling hemispheric broadband data(offset_broadband)
• Hemispheric Irradiance, MFRSR(hemisp_broadband)
• Ratio of direct_normal_broadband to diffuse_hemisp_broadband(direct_diffuse_ratio_broadband)
• Cosine correction applied to direct_horizontal_narrowband_filter6(computed_cosine_correction_filter6)
• Nominal calibration factor, applied to filter4 data(nominal_calibration_factor_filter4)
• Narrowband Diffuse Hemispheric Irradiance, Filter 5(diffuse_hemisp_narrowband_filter5)
• Cosine correction of filter3 diffuse, assuming Rayleigh sky at 45 deg zenith
  angle(diffuse_correction_filter3)
• Offset subtracted from upwelling hemispheric filter2 data(offset_filter2)
• Narrowband Hemispheric Irradiance, Filter 2(hemisp_narrowband_filter2)
• Normalized filter function data, filter 2, wavelength value obtained during
  bench calibrations(wavelength_filter2)
• Normalized filter function data, filter 2, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter2)
• Data Logger Supply Voltage(logger_volt)
• Cosine correction applied to direct_horizontal_broadband(computed_cosine_correction_broadband)
• Narrowband Diffuse Hemispheric Irradiance, Filter 3(diffuse_hemisp_narrowband_filter3)
• Alltime Narrowband Hemispheric Irradiance, Filter 6(alltime_hemisp_narrowband_filter6)
• Narrowband Hemispheric Irradiance, Filter 1(hemisp_narrowband_filter1)
• cosine correction, west to east, filter3(cosine_correction_we_filter3)
• Normalized filter function data, filter 6, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter6)
• Normalized filter function data, filter 1, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter1)
• base time(base_time)
• angle of incidence during cosine bench measurements(bench_angle)
• Normalized filter function data, filter 4, wavelength value obtained during
  bench calibrations(wavelength_filter4)
• Ratio of direct_normal_narrowband_filter3 to diffuse_hemisp_narrowband_filter3(direct_diffuse_ratio_filter3)
• Ratio of direct_normal_narrowband_filter2 to diffuse_hemisp_narrowband_filter2(direct_diffuse_ratio_filter2)
• Alltime Narrowband Hemispheric Irradiance, Filter 5(alltime_hemisp_narrowband_filter5)
• Narrowband Direct Horizontal Irradiance, Filter 1(direct_horizontal_narrowband_filter1)
• Alltime Narrowband Hemispheric Irradiance, Filter 3(alltime_hemisp_narrowband_filter3)
• Normalized filter function data, filter 1, wavelength value obtained during
  bench calibrations(wavelength_filter1)
• Direct Horizontal Broadband Irradiance, broadband scale applied(direct_horizontal_broadband)
• Direct Normal Narrowband Irradiance, Filter 3(direct_normal_narrowband_filter3)
• Narrowband Diffuse Hemispheric Irradiance, Filter 1(diffuse_hemisp_narrowband_filter1)
• Narrowband Direct Horizontal Irradiance, Filter 2(direct_horizontal_narrowband_filter2)
• Ratio of direct_normal_narrowband_filter5 to diffuse_hemisp_narrowband_filter5(direct_diffuse_ratio_filter5)
• Narrowband Diffuse Hemispheric Irradiance, Filter 4(diffuse_hemisp_narrowband_filter4)
• Normalized filter function data, filter 5, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter5)
• Cosine correction applied to direct_horizontal_narrowband_filter4(computed_cosine_correction_filter4)
• Ratio of direct_normal_narrowband_filter4 to diffuse_hemisp_narrowband_filter4(direct_diffuse_ratio_filter4)
• Direct Normal Narrowband Irradiance, Filter 1(direct_normal_narrowband_filter1)
• Offset subtracted from upwelling hemispheric filter6 data(offset_filter6)
• Alltime Hemispheric Broadband Irradiance(alltime_hemisp_broadband)
• Normalized filter function data, filter 3, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter3)
• Azimuth angle(azimuth_angle)
• Direct Normal Narrowband Irradiance, Filter 2(direct_normal_narrowband_filter2)
• time(time)
• Detector Temperature(head_temp)
• Offset subtracted from upwelling hemispheric filter5 data(offset_filter5)
• Normalized filter function data, filter 4, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter4)
• Narrowband Diffuse Hemispheric Irradiance, Filter 6(diffuse_hemisp_narrowband_filter6)
• Alltime Narrowband Hemispheric Irradiance, Filter 4(alltime_hemisp_narrowband_filter4)
• Narrowband Direct Horizontal Irradiance, Filter 5(direct_horizontal_narrowband_filter5)
• Nominal calibration factor, applied to filter3 data(nominal_calibration_factor_filter3)
• cosine correction, south to north, filter4(cosine_correction_sn_filter4)
• Cosine correction of filter4 diffuse, assuming Rayleigh sky at 45 deg zenith
  angle(diffuse_correction_filter4)
• Dummy altitude for Zeb(alt)
• Narrowband Direct Horizontal Irradiance, Filter 6(direct_horizontal_narrowband_filter6)
• Cosine correction applied to direct_horizontal_narrowband_filter2(computed_cosine_correction_filter2)
• Air mass(airmass)
• Cosine correction applied to direct_horizontal_narrowband_filter3(computed_cosine_correction_filter3)
• Cosine correction of filter6 diffuse, assuming Rayleigh sky at 45 deg zenith
  angle(diffuse_correction_filter6)
• Nominal calibration factor, applied to filter5 data(nominal_calibration_factor_filter5)
• Narrowband Hemispheric Irradiance, Filter 4(hemisp_narrowband_filter4)
• cosine correction, west to east, filter5(cosine_correction_we_filter5)
• Elevation Angle(elevation_angle)
• cosine correction, south to north, filter1(cosine_correction_sn_filter1)
• Direct Normal Broadband Irradiance broadband scale applied(direct_normal_broadband)
• Cosine correction applied to direct_horizontal_narrowband_filter1(computed_cosine_correction_filter1)
• Alltime Narrowband Hemispheric Irradiance, Filter 1(alltime_hemisp_narrowband_filter1)
• Narrowband Direct Horizontal Irradiance, Filter 3(direct_horizontal_narrowband_filter3)
• Nominal calibration factor, applied to filter6 data(nominal_calibration_factor_filter6)
• cosine correction, south to north, broadband channel(cosine_correction_sn_broadband)
• Alltime Narrowband Hemispheric Irradiance, Filter 2(alltime_hemisp_narrowband_filter2)
• cosine correction, west to east, filter4(cosine_correction_we_filter4)
• cosine correction, south to north, filter5(cosine_correction_sn_filter5)
• Nominal calibration factor, applied to broadband data(nominal_calibration_factor_broadband)
• lon(lon)
• Direct Normal Narrowband Irradiance, Filter 6(direct_normal_narrowband_filter6)
• cosine correction, west to east, broadband channel(cosine_correction_we_broadband)
• Narrowband Hemispheric Irradiance, Filter 6(hemisp_narrowband_filter6)
• Cosine correction of broadband diffuse, assuming Rayleigh sky at 45 deg zenith
  angle(diffuse_correction_broadband)
• Narrowband Hemispheric Irradiance, Filter 5(hemisp_narrowband_filter5)
• cosine correction, south to north, filter6(cosine_correction_sn_filter6)
• cosine correction, south to north, filter2(cosine_correction_sn_filter2)
• Second Detector Temperature(head_temp2)
• Time offset of tweaks from base_time(time_offset)
• Solar zenith angle(solar_zenith_angle)
• Narrowband Direct Horizontal Irradiance, Filter 4(direct_horizontal_narrowband_filter4)
• Ratio of direct_normal_narrowband_filter6 to diffuse_hemisp_narrowband_filter6(direct_diffuse_ratio_filter6)
• Cosine correction of filter2 diffuse, assuming Rayleigh sky at 45 deg zenith
  angle(diffuse_correction_filter2)
• Cosine of Solar Zenith Angle(cosine_solar_zenith_angle)
• Cosine correction of filter5 diffuse, assuming Rayleigh sky at 45 deg zenith
  angle(diffuse_correction_filter5)
• lat(lat)
• cosine correction, west to east, filter6(cosine_correction_we_filter6)
• Nominal calibration factor, applied to filter1 data(nominal_calibration_factor_filter1)