[R] Extracting data from a file containing data

[Peter Tuju]

I have the data as attached. For each nino region, I want to get the mean of the seasons January and February (JF), March, April and may (MAM), June, July and August (JJA), and October, November and December (OND) as columns of each nino regions. and have my result as;For example;
For NINO1.2Years     JF      MAMA     JJA      OND 1982 1983    .    .     .2012
Any guide please!


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Peter  E. Tuju
Dar es Salaam
T A N Z A N I A
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