direct normal broadband

If a data variable has an accompanying quality control variable it will be prepended with 'qc_'. The quality control field is bit-packed with the tests performed listed in the attributes. Each test is described with an attribute name using the format bit_#_description and bit_#_assessment. The assessment is the instrument mentor or translator catagoization of the severity of the test. For the purposes of understanding quality control variables, the words test and bit can be used interchangeably.

float direct_normal_broadband(time) ;
  direct_normal_broadband:long_name = "Direct Normal Broadband Irradiance broadband scale applied" ;
  direct_normal_broadband:units = "W/m^2" ;
  direct_normal_broadband:valid_min = 0.f ;
  direct_normal_broadband:valid_max = 5000.f ;
  direct_normal_broadband:missing_value = -9999.f ;
  direct_normal_broadband:corrections = "broadband scale factor applied" ;
int qc_direct_normal_broadband(time) ;
  qc_direct_normal_broadband:long_name = "Quality check results on field: Direct Normal Broadband Irradiance broadband scale applied" ;
  qc_direct_normal_broadband:units = "unitless" ;
  qc_direct_normal_broadband:description = "This field contains bit packed values which should be interpreted as listed. No bits set (zero) represents good data." ;
  qc_direct_normal_broadband:bit_1_description = "Data value is negative." ;
  qc_direct_normal_broadband:bit_1_assessment = "Bad" ;
  qc_direct_normal_broadband:bit_2_description = "Value is less than the valid_min." ;
  qc_direct_normal_broadband:bit_2_assessment = "Bad" ;
  qc_direct_normal_broadband:bit_3_description = "Value is greater than the valid_max." ;
  qc_direct_normal_broadband:bit_3_assessment = "Bad" ;
  qc_direct_normal_broadband:bit_4_description = "Not used" ;
  qc_direct_normal_broadband:bit_4_assessment = "Bad" ;
  qc_direct_normal_broadband:bit_4_comment = "Test no longer performed." ;
  qc_direct_normal_broadband:bit_5_description = "solar_zenith_angle > 90" ;
  qc_direct_normal_broadband:bit_5_assessment = "Bad" ;
  qc_direct_normal_broadband:bit_6_description = "solar_zenith_angle > 84" ;
  qc_direct_normal_broadband:bit_6_assessment = "Indeterminate" ;