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- parameters labelled as analyses and or instantaneous forecasts are created from data with a valid time in the month, between 00 and 23 UTC , which excludes the time 00 UTC on the first on each day of the following month.
- accumulations are created from data with a forecast period falling within the daymonth. Monthly means of daily means for accumulations are created from the last forecast step (24) on each day of the month.
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