Brewer/UVBrewer is specially designed software used with spectrophotometers, which measure the intensity of light transmitted from a source or reflected from a smooth surface, such as polished glass or from opaque substances like atmospheric gases. UVBrewer is a program designed to analyze raw data generated by the Brewer software into UV, UA and UF or UX routines. The program outputs a graphical chart showing the scan weighted UV or the daily weighted UV for a specific period. It can also calculate new irradiance results based on data from external lamp calibrations. This UV radiation monitoring software was created and developed by Martin Stanek from the Solar and Ozone Observatory of the Czech Hydrometeorological Institute. According to many users, Brewer/UVBrewer runs smoothly when installed in a compatible IBM PC desktop with Windows NT/95/98.