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<div>What is the technique available in GrADS to make a line graphy, where line represents the seasonal spatial average of five years. I want to make the line graph representing the line have spatial average of a region from May to August for five years i.e.
1980 to 1984. I have monthly data of the temperature and having plotted the graph we must have the line with seasonal spatial average of five years.</div>
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<div>Please guide, how can we do it ??<br>
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