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- HRES: accumulations are from 00UTC 00 UTC to the hour ending at the forecast step
- For the CDS time, or validity time, of 00 UTC, the accumulations are over the 24 hours ending at 00 UTC i.e. the accumulation is during the previous day
- Synoptic monthly means (stream=mnth): accumulations have units of "variable_units per forecast_step hours"
- Monthly means of daily means (stream=moda): accumulations have units that include "per day", see section Monthly means
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- parameters labelled as analyses and 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 day of the following month.
- accumulations are created from data with a forecast period falling within the day. Monthly means of daily means for accumulations are created from the last forecast step (24) on the first day of the month to the last forecast step (24) on the last day of the same month.
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