|  | 1 | = ATM = | 
                          |  | 2 |  | 
                          |  | 3 | Consists of three files patterned as azYYMMDD[ABC].cal, where the last character before the .cal is A for scan speed 12.5, B = 25, C = 50. | 
                          |  | 4 |  | 
                          |  | 5 | The contents of the files are like: | 
                          |  | 6 | {{{ | 
                          |  | 7 | AZ16 bandpairs 10 1 1000 az060306A.cal | 
                          |  | 8 | 87.72727273 24498 6.12019233 24468 2.31661442 24425 5.34458259 24501 2.05878963 24516 2.24453694 24704 1.29384497 24663 3.35342640 24280 0.64997509 24088 0.15410141 24283 | 
                          |  | 9 | }}} | 
                          |  | 10 |  | 
                          |  | 11 | Format appears to be 10 pairs of numbers specifying min and max sensor value for that band. | 
                          |  | 12 |  | 
                          |  | 13 | == ATM calibration procedure == | 
                          |  | 14 |  | 
                          |  | 15 | (as described by Andrew Wilson and dodgily transcribed by Mike) | 
                          |  | 16 |  | 
                          |  | 17 |  |