SGP/MFR10M/C1 - Heater failure

The heater stopped working on 20090517.  Maintenance on 20090520 seemed to resolve the 
problem, but the heater failed again on 5/24.  Additional maintenance on 20090610 seems to 
have resolved the issue.

The instrument is designed to operate with a head temp of around 40 deg C.  As the head 
was at ambient temp during the period covered by this DQR, the mentor suggests looking at 
the 25m MFR if one is interested in these data.

• 3 meter upwelling broadband hemispheric irradiance(up_hemisp_broadband)
• 10 meter Narrowband Upwelling Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• 3 meter upwelling narrowband hemispheric irradiance, filter 4(up_hemisp_narrowband_filter4)
• 25 meter upwelling narrowband hemispheric irradiance, filter 5, offset corrected(up_hemisp_narrowband_filter5)
• Detector temperature(head_temp)
• 3 meter upwelling narrowband hemispheric irradiance, filter 2, offset corrected(up_hemisp_narrowband_filter2)
• 3 meter upwelling narrowband hemispheric irradiance, filter 3, offset corrected(up_hemisp_narrowband_filter3)
• 10 meter upwelling narrowband hemispheric irradiance, filter 1(up_hemisp_narrowband_filter1)

• 10 meter upwelling narrowband hemispheric irradiance, filter 1(up_hemisp_narrowband_filter1)
• 3 meter upwelling broadband hemispheric irradiance(up_hemisp_broadband)
• 3 meter upwelling narrowband hemispheric irradiance, filter 3, offset corrected(up_hemisp_narrowband_filter3)
• 3 meter upwelling narrowband hemispheric irradiance, filter 2, offset corrected(up_hemisp_narrowband_filter2)
• 25 meter upwelling narrowband hemispheric irradiance, filter 5, offset corrected(up_hemisp_narrowband_filter5)
• 3 meter upwelling narrowband hemispheric irradiance, filter 4(up_hemisp_narrowband_filter4)
• 10 meter Narrowband Upwelling Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• Detector temperature(head_temp)