Migrating from Cumulus 1 to MX: Difference between revisions

Although some weather stations calculate various maxima/minima and so on; Cumulus of all flavours ignores these extras. All flavours of Cumulus calculate their own maximim and minimum for all relevant weather items, partly because not all weather station supply these and partly because Cumulus was initially designed just to work on a meteorological day running from 9am GMT one day to just before that on next calendar day (and no weather stations work like that).

Some weather stations calculate dew point and wind chill. Both flavours allow you to choose whether to use these readings, alternatively Cumulus can calculate them.

From the basic temperature, humidity, and wind speed, both flavours can work out dew point (if required), wind chill (if required), Canadian Humidity Index (humidex), USA Heat Index, and Australian Apparent Temperature. The actual formulas used for these calculations vary (except for last) between Cumulus 1 and MX (and were not calculated in Cumulus 2). Consequently you may see a discontinuity in your data from that recorded in Cumulus 1 when you move to MX.