Calculate Missing Values: Difference between revisions

* '''Dew point''', a weather station might output dew point temperatures, but Cumulus can calculate it from source values for outdoor temperature and outdoor humidity

** The original Cumulus and MX use different formulae to calculate dew point, so there is a continuity break if some of your data logs were created by the original Cumulus software and some by MX.

*[[Humidex|'''Canadian Humidity Index (Humidex)''']], [[Heat_index|'''USA Heat Index''']], and [[Apparent_temperature|'''Apparent Temperature''']] are not output by your weather station, but both the original Cumulus 1 and the newer Cumulus MX will derive these spot values for you (except if you are running a very old release)

**(The implementation of these by Cumulus software is briefly mentioned [[Feels_Like#Rest_of_this_article|here]]).

** The calculation formulae used for these may not be consistent for all releases, so again there is a possibility a data log might have continuity breaks.

*[[Feels_Like|'''Feels Like Temperature''']] is calculated by the Cumulus MX flavour only, the actual calculation formula [[Feels_Like#The_various_ways_to_express_Feels_Like|has varied]] in different releases, but use a variation on

**A bug in some versions of the original Cumulus software could result in these derived values being swapped and therefore tracked wrongly when reporting extremes.