SHB/SKYRAD/C1 - IRT Intermittent data loss

Intermittent data drop outs in this period, especially
towards the end. Replacement instrument was put in place
on 3/28/1998.

• 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)