NSA/GNDRAD/C1 - PIR measurement

Fan on PIR failed sometime during this period.  Looking at QC plots does not seem to 
indicate an actual time of failure.  Near beginning of period, deltas from comparison to IRT 
are lower, and larger later, possibly indicating failure sometime in here, but there are 
no definates. CM/PM  reports do not indicate status of fan so this is a broad range.

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• Instantaneous Upwelling Pyrgeometer Thermopile Pyrgeometer(inst_up_long_hemisp_tp)
• Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist)
• Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance Pyrgeometer(inst_up_long_dome_resist)