Keywords: mira

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### GAINS section

The GAINS section is not a part of the MBFITS raw-data format, and contains information relevant to data calibration (together with the weather data, that are written to the MONITOR section). There is a separate GAINS section for each frontend-backend combination (i.e. GAINS1, GAINS2 etc.).

GAINS1%PCOLD | D |  | backend count rate of cold load
GAINS1%PHOT | D |  | backend count rate on ambient load
GAINS1%PSKY | D |  | backend count rate on sky
GAINS1%LCALOF | D | deg | longitude offset for sky measurement
GAINS1%BCALOF | D | deg | latitude offset for sky measurement
GAINS1%TAUZEN | D | Np | zenith opacity
GAINS1%TAUZENIMAGE | D | Np | zenith opacity in image band
GAINS1%TATMS | D | K | atmospheric emission temperature
GAINS1%TATMI | D | K | atmospheric emission temperature (image band)
GAINS1%TSYS | D | K | system temperature
GAINS1%TRX | D | K | receiver temperature
GAINS1%H2OMM | D | mm | precipitable water vapour
GAINS1%GAINARRAY | D |  | gain array (= PHOTPSKY)
GAINS1%FEBE | C*17 |  | frontend-backend identification

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