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quarterly() aggregates the daily timeseries into a quarterly one. Aggregation is done differently for TMIN, TMAX, and PRCP.
quarterly()
quarterly(x)
A tibble with the quarterly timeseries at the stations.
Object of class ghcn_daily. See daily() for details.
ghcn_daily
daily()
Quarters are defined as:
January to March
April to June
July to September
October to December
Aggregation is done as:
Maximum temperature recorded in the quarter
Minimum temperature recorded in the quarter
Total (cumulative) precipitation amount in the quarter
quarterly(CA003076680)
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