This paper is based on a small extract of the information available on SWS. It has discussed the steps that should be taken when analysing SWS data, what to be aware of in the data and what the current accuracy of the calibration is.
Users are reminded to read the SWS IDUM ([Leech, K. et al.\1997a]) and to consult the ISO Web site (http://www.iso.vilspa.esa.es/) for the latest information.