Table containing mean and standard deviation of monthly clear-sky brightness temperature maps and number of clear-sky observations.
| Number of Obs. | chn 2 | chn 5 | chn 8 | chn 12 | chn 14 | |
| TIROS-N | Counts | mean,std | mean,std | mean,std | mean,std | mean,std |
| NOAA-6 | Counts | mean,std | mean,std | mean,std | mean,std | mean,std |
| NOAA-7 | Counts | mean,std | mean,std | mean,std | mean,std | mean,std |
| NOAA-8 | Counts | mean,std | mean,std | mean,std | mean,std | mean,std |
| NOAA-9 | Counts | mean,std | mean,std | mean,std | mean,std | mean,std |
| NOAA-10 | Counts | mean,std | mean,std | mean,std | mean,std | mean,std |
| NOAA-11 | Counts | mean,std | mean,std | mean,std | mean,std | mean,std |
| NOAA-12 | Counts | mean,std | mean,std | mean,std | mean,std | mean,std |
| NOAA-14 | Counts | mean,std | mean,std | mean,std | mean,std | mean,std |
| NOAA-15 | Counts | mean,std | mean,std | mean,std | mean,std | mean,std |