SGP/IRT/E13 - Reprocess: Sensor Calibration

The measurements are greater than AERI, especially when sky temperature is less than -40C. 
The lens and mirror was cleaned on 11/21/2008 and the mirror was replaced on 1/28/2009 
but these actions did not correct the problem. It was learned that the internal 
calibration factor was not changed by the manufacturer after the unit was repaired and recalibrated 
on 9/6/2007. The calibration factor was corrected from 1.2172 to 1.4100 on 2/12/2009.

• Sky Infra Red Temperature Maxima(sky_ir_temp_max)
• Sky Infra-Red Temperature(sky_ir_temp)
• Sky Infra-Red Temperature Minima(sky_ir_temp_min)
• Sky infrared temperature, standard deviation(sky_ir_temp_std)

• Sky Infra-Red Temperature(sky_ir_temp)