there is a fair amount of duplication not sure why this might be 2.gif and 7.gif for instance. perhaps they have different alpha transparencies?
Jonathan, The BBC weather icons dovetail with the Met Office ones [1] but the Met Office have different icons for weather events at night to those during the day and the BBC don't make that distinction. 2.gif corresponds to http://www.metoffice.gov.uk/weather/images/symbols/w2x15.gif - Partly cloudy (night) 7.gif corresponds to http://www.metoffice.gov.uk/weather/images/symbols/w7x15.gif - Medium-level cloud A curious thing: the two sets don't completely tally - the BBC's 32.gif is Hazy, in the Met Office's set they don't have a 32 but they do have 33 which is Haze. Best wishes, Al [1] http://www.metoffice.gov.uk/weather/uk/guide/key.html