SGP/QCRAD/E1 - Intermittently missing MFRSR data

Chunks of MFRSR data are missing during 20050514 - 20050712.  After maintenance was 
performed on 20050712 the 415, 500 and 940 nm channels are available, and while they look OK, 
they should be used with caution.

MFRSR data may be missing or zero; some tests on best estimate global shortwave cannot be 
applied.  BEGSW could be incorrect if MFRSR data used in tests or fits.

See instrument DQR D050521.1

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• MFRSR Broadband Diffuse SW(MFRSR_diffuse_hemisp_broadband)
• MFRSR Broadband Global SW(MFRSR_hemisp_broadband)
• Quality check results on field: Best Estimate Global Downwelling Shortwave
  Hemispheric Irradiance(BestEstimate_down_short_hemisp)
• MFRSR Data Usage Flag(MFRSR_flag)
• MFRSR Broadband Direct Normal SW(MFRSR_direct_normal_broadband)

• MFRSR Broadband Direct Normal SW(MFRSR_direct_normal_broadband)
• Quality check results on field: Best Estimate Global Downwelling Shortwave
  Hemispheric Irradiance(BestEstimate_down_short_hemisp)
• MFRSR Broadband Diffuse SW(MFRSR_diffuse_hemisp_broadband)
• MFRSR Broadband Global SW(MFRSR_hemisp_broadband)
• MFRSR Data Usage Flag(MFRSR_flag)