@BeginModule
@NewPage
@Name      = EcaTg10p
@Title     = Cold days percent wrt 10th percentile of reference period
@Section   = Climate indices
@Class     = Climate index
@Arguments = ifile1 ifile2 ofile
@Operators = eca_tg10p

@BeginDescription
Let @file{ifile1} be a time series of daily mean temperatures TG, and
@file{ifile2} be the 10th percentile TGn10 of daily mean temperatures
for any period used as reference. Then calculated is the percentage
of time where TG < TGn10. Note that both TG and TGn10 must be given
in the same units.
The date information for a time step in @file{ofile} is the date of
the last contributing time step in @file{ifile1}.
@EndDescription
@EndModule


@BeginOperator_eca_tg10p
@Title     = Cold days percent wrt 10th percentile of reference period
@EndOperator


@BeginExample
To compute the percentage of time where the daily mean temperature
is less than the 10th percentile of the daily mean temperature for
a given reference period, use:
@BeginVerbatim
   cdo eca_tg10p tgfile tgn10file ofile
@EndVerbatim
@EndExample
