[ncl-talk] Computing max of monthly NO2 data each year

[Doumbia]

Dear ncl users,

I am trying to compute the monthly maximum NO2 in a yearly basis.

My input file contains 7 columns representing different variables and 396 lines (monthly mean NO2 data from 1980 to 2012). I am only interested by the 2000-2012 period .

The results I’ve obtained aren’t what I expected.
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I will appreciate any help to resolve this.

Please find attached my script as well as my input file.

Thank you in advance,
Thierno