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→What do the various wind speeds in Cumulus correspond to, with Davis stations?: Restyle following change to Fine Offset style
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== What do the various wind speeds in Cumulus correspond to, with Davis stations? == | == What do the various wind speeds in Cumulus correspond to, with Davis stations? == | ||
Davis stations supply two windspeeds, a 3-second average and a 10-minute average (later versions of the firmware also supply a 2-minute average, Cumulus currently doesn't use this). The Davis 3-second average is treated by Cumulus as 'Latest' (available via <#wlatest>) | Davis stations supply two windspeeds, a 3-second average and a 10-minute average (later versions of the firmware also supply a 2-minute average, Cumulus currently doesn't use this). | ||
* The Davis 3-second average is treated by Cumulus as 'Latest' (available via <#wlatest>) | |||
* The Davis 10-minute average is the Cumulus 'Average' (available via <#wspeed>). | |||
Note that if you sample these readings at shorter (real time) intervals it is possible for Cumulus 'Latest' to be lower than Cumulus 'Average' because approximately half of the 3-second wind speeds will be higher and half of them lower than the 10-minute average. | |||
Davis stations do not supply the 'Gust value. The Cumulus 'Gust (available via <#wgust>) is a value calculated by Cumulus by capturing the highest of the station's 3-second readings over the previous 10 minutes. | |||
== What do the various wind speeds in Cumulus correspond to, with Fine Offset stations? == | == What do the various wind speeds in Cumulus correspond to, with Fine Offset stations? == | ||
Fine Offset stations measure wind over 48-second intervals, divided into 24 2-second intervals. At the end of each 48-second period, they report the highest of those 24 values as 'Gust', and the average of those 24 values as 'Wind'. Cumulus, for various reasons, uses different terminology, and also has configuration settings which control how some of the wind values are displayed. | Fine Offset stations measure wind over 48-second intervals, divided into 24 2-second intervals. At the end of each 48-second period, they report the highest of those 24 values as 'Gust', and the average of those 24 values as 'Wind'. Cumulus, for various reasons, uses different terminology, and also has configuration settings which control how some of the wind values are displayed. | ||