SGP/MFRSR/E22 - Shadowband Misalignment

A shading problem was first evident on 20090116.  It affected data from sunrise to 1900.  
There was a severe winter storm on the 26th and 27th and it affected several instruments. 
 On the 28th the shading problem was much worse, affecting the entire day through to 
30th when it looks like an attempt to align the band was made at ~1630.  From that point on 
the problem shifted to the afternoon, with the affected hours from 1930 until sunset.  
The shading issue continued until 20090423 @1830 when maintenance resolved the issue.

Note that there is a large data gap in the period covered by this DQR.  Data are missing 
from 20090211 @1900 through 20090327 @1300.

• log(irradiance) for the Direct Narrowband Filter2, Barnard(barnard_lnI_filter2)
• log(irradiance) for the Direct Narrowband Filter1, Barnard(barnard_lnI_filter1)
• log(irradiance) for the Direct Narrowband Filter4(barnard_lnI_filter4)
• log(irradiance) for the Direct Narrowband Filter3, Barnard(barnard_lnI_filter3)
• log(irradiance) for the Direct Narrowband Filter6(barnard_lnI_filter6)
• log(irradiance) for the Direct Narrowband Filter5(barnard_lnI_filter5)
• log(irradiance) for the Direct Narrowband Filter6, Michalsky(michalsky_lnI_filter6)
• log(irradiance) for the Direct Narrowband Filter4, Michalsky(michalsky_lnI_filter4)
• log(irradiance) for the Direct Narrowband Filter5, Michalsky(michalsky_lnI_filter5)
• Airmasses(barnard_airmass)
• rejected points for the final fit for the Direct Broadband, Barnard(barnard_rejected_broadband)
• airmass(michalsky_airmass)
• log(irradiance) for the Direct Narrowband Filter2, Michalsky(michalsky_lnI_filter2)
• log(irradiance) for the Direct Narrowband Filter3, Michalsky(michalsky_lnI_filter3)
• log(irradiance) for the Direct Narrowband Filter1(michalsky_lnI_filter1)
• log(irradiance) for the Direct Broadband(barnard_lnI_broadband)
• rejected points for the final fit for the Direct Narrowband Filter6, Michalsky(michalsky_rejected_filter6)
• rejected points for the final fit for the Direct Narrowband Filter5, Michalsky(michalsky_rejected_filter5)
• rejected points for the final fit for the Direct Broadband(michalsky_rejected_broadband)
• rejected points for the final fit for the Direct Narrowband Filter1(barnard_rejected_filter1)
• rejected points for the final fit for the Direct Narrowband Filter2(barnard_rejected_filter2)
• rejected points for the final fit for the Direct Narrowband Filter3, Barnard(barnard_rejected_filter3)
• rejected points for the final fit for the Direct Narrowband Filter4, Barnard(barnard_rejected_filter4)
• rejected points for the final fit for the Direct Narrowband Filter5, Barnard(barnard_rejected_filter5)
• rejected points for the final fit for the Direct Narrowband Filter6(barnard_rejected_filter6)
• log(irradiance) for the Direct Broadband(michalsky_lnI_broadband)
• rejected points for the final fit for the Direct Narrowband Filter2(michalsky_rejected_filter2)
• rejected points for the final fit for the Direct Narrowband Filter1, Michalsky(michalsky_rejected_filter1)
• rejected points for the final fit for the Direct Narrowband Filter4, Michalsky(michalsky_rejected_filter4)
• rejected points for the final fit for the Direct Narrowband Filter3, Michalsky(michalsky_rejected_filter3)

• solar constant corrected for solar distance for the Direct Broadband(michalsky_solar_constant_sdist_broadband)
• standard deviation around regression line for the Direct BroadBand(michalsky_standard_deviation_broadband)
• number of points used in final linear fit for the Direct Narrowband Filter5(barnard_number_points_filter5)
• number of points used in final linear fit for the Direct Narrowband Filter4(barnard_number_points_filter4)
• number of points used in final linear fit for the Direct Narrowband Filter6(barnard_number_points_filter6)
• solar constant for the Direct Narrowband Filter6(michalsky_solar_constant_filter6)
• Langley regression Io, Michalsky, Direct Narrowband Filter5(michalsky_solar_constant_filter5)
• Langley regression Io, Michalsky, Direct Narrowband Filter4(michalsky_solar_constant_filter4)
• solar constant for the Direct Narrowband Filter3(michalsky_solar_constant_filter3)
• Langley regression Io, Michalsky, Direct Narrowband Filter2(michalsky_solar_constant_filter2)
• rejection flag for Direct Narrowband Filter2(michalsky_badflag_filter2)
• solar constant for the Direct Narrowband Filter1(michalsky_solar_constant_filter1)
• rejection flag for Direct Narrowband Filter1(michalsky_badflag_filter1)
• rejection flag for Direct Narrowband Filter4(michalsky_badflag_filter4)
• rejection flag for Direct Narrowband Filter3(michalsky_badflag_filter3)
• rejection flag for Direct Narrowband Filter6(michalsky_badflag_filter6)
• rejection flag for Direct Narrowband Filter5(michalsky_badflag_filter5)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter4(michalsky_good_fraction_filter4)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter5(michalsky_good_fraction_filter5)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter6(michalsky_good_fraction_filter6)
• error in final linear fit for the Direct Narrowband Filter1(barnard_error_fit_filter1)
• error in final linear fit for the Direct Narrowband Filter2(barnard_error_fit_filter2)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter1(michalsky_good_fraction_filter1)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter2(michalsky_good_fraction_filter2)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter3(michalsky_good_fraction_filter3)
• error in final linear fit for the Direct Narrowband Filter5(barnard_error_fit_filter5)
• error in final linear fit for the Direct Narrowband Filter6(barnard_error_fit_filter6)
• error in final linear fit for the Direct Narrowband Filter3(barnard_error_fit_filter3)
• error in final linear fit for the Direct Narrowband Filter4(barnard_error_fit_filter4)
• solar constant corrected for solar distance for the Direct Narrowband Filter3(barnard_solar_constant_sdist_filter3)
• Langley regression Io, adjusted to 1AU, Barnard, Direct Narrowband Filter4(barnard_solar_constant_sdist_filter4)
• error in optical depth (slope) of final linear fit for the Direct Broadband(barnard_error_slope_broadband)
• solar constant corrected for solar distance for the Direct Narrowband Filter1(barnard_solar_constant_sdist_filter1)
• solar constant corrected for solar distance for the Direct Narrowband Filter2(barnard_solar_constant_sdist_filter2)
• Angstrom exponent(barnard_angstrom_exponent)
• solar constant corrected for solar distance for the Direct Narrowband Filter5(barnard_solar_constant_sdist_filter5)
• solar constant corrected for solar distance for the Direct Narrowband Filter6(barnard_solar_constant_sdist_filter6)
• optical depth for the Direct BroadBand(barnard_optical_depth_broadband)
• rejection flag for Direct Broadband(barnard_badflag_broadband)
• number of points used in final linear fit for the Direct Broadband(barnard_number_points_broadband)
• percentage of initial points used in final linear fit for the Direct Broadband(barnard_good_fraction_broadband)
• standard deviation around regression line for the Direct Narrowband Filter3(michalsky_standard_deviation_filter3)
• standard deviation around regression line for the Direct Narrowband Filter4(michalsky_standard_deviation_filter4)
• standard deviation around regression line for the Direct Narrowband Filter5(michalsky_standard_deviation_filter5)
• standard deviation around regression line for the Direct Narrowband Filter6(michalsky_standard_deviation_filter6)
• standard deviation around regression line for the Direct Narrowband Filter1(michalsky_standard_deviation_filter1)
• standard deviation around regression line for the Direct Narrowband Filter2(michalsky_standard_deviation_filter2)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter6(barnard_good_fraction_filter6)
• rejection flag for Direct Broadband(michalsky_badflag_broadband)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter5(barnard_good_fraction_filter5)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter2(barnard_good_fraction_filter2)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter1(barnard_good_fraction_filter1)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter4(barnard_good_fraction_filter4)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter3(barnard_good_fraction_filter3)
• solar constant corrected for solar distance for the Direct Narrowband Filter1(michalsky_solar_constant_sdist_filter1)
• Langley regression Io, adjusted to 1AU, Barnard, Direct BroadBand(barnard_solar_constant_sdist_broadband)
• number of points used in final linear fit for the Direct Narrowband Filter1(michalsky_number_points_filter1)
• number of points used in final linear fit for the Direct Narrowband Filter2(michalsky_number_points_filter2)
• number of points used in final linear fit for the Direct Narrowband Filter3(michalsky_number_points_filter3)
• number of points used in final linear fit for the Direct Narrowband Filter4(michalsky_number_points_filter4)
• number of points used in final linear fit for the Direct Narrowband Filter5(michalsky_number_points_filter5)
• number of points used in final linear fit for the Direct Narrowband Filter6(michalsky_number_points_filter6)
• solar constant corrected for solar distance for the Direct Narrowband Filter2(michalsky_solar_constant_sdist_filter2)
• solar constant corrected for solar distance for the Direct Narrowband Filter3(michalsky_solar_constant_sdist_filter3)
• solar constant corrected for solar distance for the Direct Narrowband Filter4(michalsky_solar_constant_sdist_filter4)
• solar constant corrected for solar distance for the Direct Narrowband Filter5(michalsky_solar_constant_sdist_filter5)
• solar constant corrected for solar distance for the Direct Narrowband Filter6(michalsky_solar_constant_sdist_filter6)
• rejection flag for Direct Narrowband Filter4(barnard_badflag_filter4)
• rejection flag for Direct Narrowband Filter5(barnard_badflag_filter5)
• rejection flag for Direct Narrowband Filter6(barnard_badflag_filter6)
• optical depth for the Direct BroadBand(michalsky_optical_depth_broadband)
• number of points used in final linear fit for the Direct Broadband(michalsky_number_points_broadband)
• rejection flag for Direct Narrowband Filter1(barnard_badflag_filter1)
• rejection flag for Direct Narrowband Filter2(barnard_badflag_filter2)
• rejection flag for Direct Narrowband Filter3(barnard_badflag_filter3)
• optical depth for the Direct Narrowband Filter3(barnard_optical_depth_filter3)
• optical depth for the Direct Narrowband Filter4(barnard_optical_depth_filter4)
• optical depth for the Direct Narrowband Filter1(barnard_optical_depth_filter1)
• optical depth for the Direct Narrowband Filter2(barnard_optical_depth_filter2)
• optical depth for the Direct Narrowband Filter5(barnard_optical_depth_filter5)
• optical depth for the Direct Narrowband Filter6(barnard_optical_depth_filter6)
• percentage of initial points used in final linear fit for the Direct Broadband(michalsky_good_fraction_broadband)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter6(barnard_error_slope_filter6)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter5(barnard_error_slope_filter5)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter2(barnard_error_slope_filter2)
• optical depth for the Direct Narrowband Filter4(michalsky_optical_depth_filter4)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter1(barnard_error_slope_filter1)
• optical depth for the Direct Narrowband Filter5(michalsky_optical_depth_filter5)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter4(barnard_error_slope_filter4)
• optical depth for the Direct Narrowband Filter6(michalsky_optical_depth_filter6)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter3(barnard_error_slope_filter3)
• optical depth for the Direct Narrowband Filter1(michalsky_optical_depth_filter1)
• optical depth for the Direct Narrowband Filter2(michalsky_optical_depth_filter2)
• optical depth for the Direct Narrowband Filter3(michalsky_optical_depth_filter3)
• number of points used in final linear fit for the Direct Narrowband Filter1(barnard_number_points_filter1)
• number of points used in final linear fit for the Direct Narrowband Filter3(barnard_number_points_filter3)
• number of points used in final linear fit for the Direct Narrowband Filter2(barnard_number_points_filter2)
• error in final linear fit for the Direct BroadBand(barnard_error_fit_broadband)
• Angstrom exponent(michalsky_angstrom_exponent)
• Langley regression Io, Michalsky, Direct BroadBand(michalsky_solar_constant_broadband)

• Direct normal narrowband irradiance, filter 4, offset corrected(direct_normal_narrowband_filter4)
• Narrowband Direct Normal Irradiance, Filter 3, cosine corrected(direct_normal_narrowband_filter3)
• Direct normal narrowband irradiance, filter 2, offset corrected(direct_normal_narrowband_filter2)
• Narrowband Direct Normal Irradiance, Filter 1(direct_normal_narrowband_filter1)
• Direct normal narrowband irradiance, filter 6, offset corrected(direct_normal_narrowband_filter6)
• Narrowband Direct Normal Irradiance, Filter 5(direct_normal_narrowband_filter5)
• Narrowband hemispheric irradiance, filter 4, offset and cosine corrected(hemisp_narrowband_filter4)
• Narrowband Hemispheric Irradiance, Filter 5, offset corrected(hemisp_narrowband_filter5)
• Narrowband Hemispheric Irradiance, Filter 2(hemisp_narrowband_filter2)
• Narrowband hemispheric irradiance, filter 3, offset and cosine corrected(hemisp_narrowband_filter3)
• Narrowband Hemispheric Irradiance, Filter 1, offset corrected(hemisp_narrowband_filter1)
• Narrowband hemispheric irradiance, filter 6, nominal wavelength is 935 nm(hemisp_narrowband_filter6)
• Cosine solar zenith angle(cosine_solar_zenith_angle)
• Direct Normal Broadband Irradiance, cosine corrected, broadband scale applied(direct_normal_broadband)
• Diffuse Narrowband Hemispheric Irradiance, Filter 1, offset corrected(diffuse_hemisp_narrowband_filter1)
• Diffuse Narrowband Hemispheric Irradiance, Filter 2, offset corrected(diffuse_hemisp_narrowband_filter2)
• Narrowband diffuse hemispheric irradiance, filter 5, offset and cosine corrected(diffuse_hemisp_narrowband_filter5)
• Diffuse Narrowband Hemispheric Irradiance, Filter 6, offset corrected(diffuse_hemisp_narrowband_filter6)
• Diffuse Narrowband Hemispheric Irradiance, Filter 3(diffuse_hemisp_narrowband_filter3)
• Diffuse Narrowband Hemispheric Irradiance, Filter 4(diffuse_hemisp_narrowband_filter4)
• Hemispheric broadband irradiance(hemisp_broadband)
• Diffuse Hemispheric Broadband Irradiance, offset corrected(diffuse_hemisp_broadband)
• Direct Horizontal Broadband Irradiance(direct_horizontal_broadband)
• Ratio of direct_normal_filter1 to diffuse_hemisp_filter1(direct_diffuse_ratio_filter1)
• Ratio of direct_normal_filter2 to diffuse_hemisp_filter2(direct_diffuse_ratio_filter2)
• Ratio of direct_normal_filter5 to diffuse_hemisp_filter5(direct_diffuse_ratio_filter5)
• Ratio of direct_normal_broadband to diffuse_hemisp_broadband(direct_diffuse_ratio_broadband)
• Ratio of direct_normal_narrowband_filter6 to diffuse_hemisp_narrowband_filter6(direct_diffuse_ratio_filter6)
• Ratio of direct_normal_narrowband_filter3 to diffuse_hemisp_narrowband_filter3(direct_diffuse_ratio_filter3)
• Ratio of direct_normal_filter4 to diffuse_hemisp_filter4(direct_diffuse_ratio_filter4)
• Narrowband Direct Horizontal Irradiance, Filter 6, cosine corrected(direct_horizontal_narrowband_filter6)
• Narrowband Direct Horizontal Irradiance, Filter 2, cosine corrected(direct_horizontal_narrowband_filter2)
• Direct Horizontal Narrowband Irradiance, Filter 3(direct_horizontal_narrowband_filter3)
• Narrowband Direct Horizontal Irradiance, Filter 4, cosine corrected(direct_horizontal_narrowband_filter4)
• Narrowband Direct Horizontal Irradiance, Filter 5, cosine corrected(direct_horizontal_narrowband_filter5)
• Direct horizontal narrowband irradiance, filter 1(direct_horizontal_narrowband_filter1)

• Diffuse Narrowband Hemispheric Irradiance, Filter 1, offset corrected(diffuse_hemisp_narrowband_filter1)
• Diffuse Narrowband Hemispheric Irradiance, Filter 2, offset corrected(diffuse_hemisp_narrowband_filter2)
• Narrowband hemispheric irradiance, filter 5(hemisp_narrowband_filter5_raw)
• Narrowband diffuse hemispheric irradiance, filter 5, offset and cosine corrected(diffuse_hemisp_narrowband_filter5)
• Diffuse Narrowband Hemispheric Irradiance, Filter 6, offset corrected(diffuse_hemisp_narrowband_filter6)
• Diffuse Narrowband Hemispheric Irradiance, Filter 3(diffuse_hemisp_narrowband_filter3)
• Diffuse Narrowband Hemispheric Irradiance, Filter 4(diffuse_hemisp_narrowband_filter4)
• Narrowband Hemispheric Irradiance, Filter 1, offset corrected(hemisp_narrowband_filter1)
• Narrowband Hemispheric Irradiance, Filter 5, offset corrected(hemisp_narrowband_filter5)
• Narrowband hemispheric irradiance, filter 4, offset and cosine corrected(hemisp_narrowband_filter4)
• Narrowband hemispheric irradiance, filter 3, offset and cosine corrected(hemisp_narrowband_filter3)
• Narrowband Hemispheric Irradiance, Filter 2(hemisp_narrowband_filter2)
• Narrowband hemispheric irradiance, filter 6, nominal wavelength is 935 nm(hemisp_narrowband_filter6)
• Hemispheric broadband irradiance(hemisp_broadband_raw)
• Diffuse narrowband hemispheric irradiance, filter 3(diffuse_hemisp_narrowband_filter3_raw)
• Narrowband hemispheric irradiance, filter 2(hemisp_narrowband_filter2_raw)
• Diffuse Hemispheric Broadband Irradiance, offset corrected(diffuse_hemisp_broadband)
• Diffuse narrowband hemispheric irradiance, filter 4(diffuse_hemisp_narrowband_filter4_raw)
• Diffuse Hemispheric Broadband Irradiance(diffuse_hemisp_broadband_raw)
• Narrowband Hemispheric Irradiance, Filter 3(hemisp_narrowband_filter3_raw)
• Direct Horizontal Broadband Irradiance(direct_horizontal_broadband)
• Hemispheric broadband irradiance(hemisp_broadband)
• Diffuse Narrowband Hemispheric Irradiance, Filter 5(diffuse_hemisp_narrowband_filter5_raw)
• Narrowband hemispheric irradiance, filter 4(hemisp_narrowband_filter4_raw)
• Narrowband Hemispheric Irradiance, Filter 6(hemisp_narrowband_filter6_raw)
• Diffuse narrowband hemispheric irradiance, filter 1(diffuse_hemisp_narrowband_filter1_raw)
• Diffuse narrowband hemispheric irradiance, filter 6(diffuse_hemisp_narrowband_filter6_raw)
• Narrowband hemispheric irradiance, filter 1(hemisp_narrowband_filter1_raw)
• Alltime Narrowband Hemispheric Irradiance, Filter 3(alltime_hemisp_narrowband_filter3)
• Alltime Narrowband Hemispheric Irradiance, Filter 4(alltime_hemisp_narrowband_filter4)
• Alltime narrowband hemispheric irradiance, filter 5(alltime_hemisp_narrowband_filter5)
• Alltime Narrowband Hemispheric Irradiance, Filter 6(alltime_hemisp_narrowband_filter6)
• Alltime narrowband hemispheric irradiance, filter 1(alltime_hemisp_narrowband_filter1)
• Alltime narrowband hemispheric irradiance, filter 2(alltime_hemisp_narrowband_filter2)
• Direct Horizontal Narrowband Irradiance, Filter 3(direct_horizontal_narrowband_filter3)
• Narrowband Direct Horizontal Irradiance, Filter 2, cosine corrected(direct_horizontal_narrowband_filter2)
• Narrowband Direct Horizontal Irradiance, Filter 5, cosine corrected(direct_horizontal_narrowband_filter5)
• Narrowband Direct Horizontal Irradiance, Filter 4, cosine corrected(direct_horizontal_narrowband_filter4)
• Narrowband Direct Horizontal Irradiance, Filter 6, cosine corrected(direct_horizontal_narrowband_filter6)
• Direct horizontal narrowband irradiance, filter 1(direct_horizontal_narrowband_filter1)
• Alltime hemispheric broadband irradiance(alltime_hemisp_broadband)
• Diffuse Narrowband Hemispheric Irradiance, Filter 2(diffuse_hemisp_narrowband_filter2_raw)