compare 4 timeseries

[bernd.becker at METOFFICE.GOV.UK]

hello!


I want to pick the lowest value at each time step
from 4 time series.

 how do I get the following to work?

define t=tloop(min(tmean.62,tmean.63,tmean.64,tmean.66))

Syntax Error:  Invalid dimension expression
  Expecting X/Y/Z/T/LAT/LON/LEV/TIME, found tmean
Error from MIN:  1st dimension expression invalid
Operation Error:  Error from min function
Operation Error:  Error from tloop function
  Error ocurred at column 1
DEFINE error:  Invalid expression.
ga-> q dims
Default file number is: 2
X is fixed     Lon = -97  X = -96
Y is fixed     Lat = 33  Y = 124
Z is fixed     Lev = 1  Z = 1
T is varying   Time = 00Z01JAN25655 to 00Z22DEC25655  T = 1 to 356


cheers,
Bernd.
--
Bernd Becker   The Monthly Outlook
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