@BeginModule
@Name      = EcaR20mm
@Title     = Very heavy precipitation days index per time period
@Section   = Climate indices
@Class     = Climate index
@Arguments = ifile ofile
@Operators = eca_r20mm

@BeginDescription
Let @file{ifile} be a time series of daily precipitation amounts RR,
then counted is the number of days where RR is at least 20 mm. 
The date information of a time step in @file{ofile} is the date of
the last contributing time step in @file{ifile}.
@EndDescription
@EndModule


@BeginOperator_eca_r20mm
@Title     = Very heavy precipitation days index per time period
@EndOperator


@BeginExample
To get the number of days with precipitation greater than 20 mm for
a time series of daily precipitation amounts use:
@BeginVerbatim
   cdo eca_r20mm rrfile ofile
@EndVerbatim
@EndExample
