NSA/SKYRAD/C1 - Unshaded PIR data incorrect

Data from this time period is incorrect because instrument was swapped out for 
calibration and correct calibrations were not entered for replacement.  Some 
missing data during this time interval as well

• PIR1 minimum(pir1_min)
• PIR1 unshaded standard deviation(pir1_sd)
• PIR1 unshaded maximum(pir1_max)
• PIR1 mean(pir1_mean)