SHB/SKYRAD/C1 - Water spots on IRT Lens

IRT Lens had water spots on it.  Spots were removed with ethanol on a
lens cloth. The	exact starting time is unknown,	but is conservatively
set to the time of the previous inspection time.

• IRT1 minimum(irt1_min)
• IRT1 standard deviation(irt1_sd)
• IRT1 mean(irt1_mean)
• IRT1 maximum(irt1_max)

• (Raw data stream - documentation not supported)

• IRT1 minimum(irt1_min)
• IRT1 maximum(irt1_max)
• IRT1 mean(irt1_mean)
• IRT1 standard deviation(irt1_sd)