Keywords: class

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## Skydip Processing

CLASS is able to reduce skydip data. Skydip mode must be selected using command `SET MODE` `SKYDIP` which also changes the prompt to `SAS>` (Skydip Analysis System). Commands `FIND, HEADER, GET, PLOT` and `WRITE` may be used as for Continuum and Line modes, but the only other valid command is `REDUCE` which fits the sky emission using atmospheric information available in the data, and displays the results.