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seasurfacetemperatures
2009 Feb 20
3
mean over previous cells
Dear RUsers,
I guess this is an easy question for someone a little familiar with
programming...(which I am not)...
I've got 2 colummns, one shows just dates(SST_date, Class 'Date' num), the
other one shows the SeaSurfaceTemperature (SST, num) at that certain date.
SST_date SST
2008-01-01 22.2
2008-01-02 21.8
2008-01-03 22.8
2008-01-04 22.9
2008-01-05 23.1
2008-01-06 23.2
...
...
now, I would like to add a column that shows the mean SST over the last
(e.g.) 60 days (for that specific date).
My biological question is,...