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On the WOW website there is a table Weather Data which describes the accepted parameter keys. Note that the expected units are not metric, so all data values configured in the metric system must be converted.
Setting up measurement sites occurs through the WOW website. It is necessary to obtain a user account from the MetOffice in order to add sites. When setting up a site location it is necessary to configure a AWS pin number, as without this pin it is not possible to add data through the Automatic Upload API.