_:genid1 "Free to use with credit to the original figure source."^^ . "precip-change-v2" . "7.3"^^ . "2-Day Precipitation Events Exceeding 5-Year Recurrence Interval"^^ . "Index of the number of 2-day precipitation events exceeding the station-specific threshold for a 5-year recurrence interval in the contiguous United States, expressed as a percentage difference from the 1901–1960 mean. The annual values are averaged over 5-year periods, with the pentad label indicating the ending year of the period. Annual time series of the number of events are first calculated at individual stations. Next, the grid box time series are calculated as the average of all stations in the grid box. Finally, a national time series is calculated as the average of the grid box time series. Data source: GHCN-Daily. (Figure source: CICS-NC and NOAA NCEI)."^^ . _:genid1 . . . . . . _:genid2 . _:genid2 . _:genid2 . _:genid2 . _:genid2 .