@BeginModule
@Name      = Strgal
@Title     = Strong gale days index per time period 
@Section   = Miscellaneous
@Arguments = ifile ofile
@Operators = strgal

@BeginDescription
Let @file{ifile} be a time series of daily maximum horizontal wind speeds
VX, then counted is the number of days where VX is greater than or equal 
to 20.5 m/s. Note that VX is defined as the square root of the sum of squares
of the zonal and meridional wind speeds and must be given in units of m/s.
The date information for a time step in @file{ofile} is the date of
the last contributing time step in @file{ifile}.
@EndDescription
@EndModule


@BeginOperator_strgal
@Title     = Strong gale days index per time period
@EndOperator
