[ferret_users] jjas mean each year

To: "ferret_users@xxxxxxxx" <ferret_users@xxxxxxxx>
Subject: [ferret_users] jjas mean each year
From: Nitin Patil <nitinpatil85@xxxxxxxxx>
Date: Thu, 1 Sep 2016 14:49:35 +0530
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Dear ferret usrs,

I have 112 yrs data for JJAS only in netcdf, which has 448 time steps (112*4=448)

I have to do only JJAS average each year separately in one file (only 112 time steps will be there after this)

any idea how to do this in ferret.

Regards,

Nitin Patil