If you look in the tags.txt file, usually in the Root directory you'll see "units" for different measurements. For instance ^vhi002^^uni002^ at ^vht002^ is the maximum wind gust for today with uni002 being MPH and vht002 the time it occurred. If you look at my site and then at
http://chapalaweather.net/raw.htm you'll see I use a mix, sometimes I enter the unit due to quirks in the way FontPage operates.