Accumulating Precipitation Data

If we have a pandas dataframe named df1 with a column '15min' containing 15 minute precipitation data, we can easily accumulate for other durations, using the rolling method as shown in the example below:

df1['01 h'] =df1['15min'].rolling(window=4,center=False).sum()

Note that the window=4 parameter means that it will accumulate 4 lines of 15 minute data, resulting in 1 hour precipitation. This parameter can be changed to whatever duration you want.