Dear Users,<br> <br> Is there anyone who know what I should do for a solution to these questions:<br> <br> 1) I have a grib data with an array of 278 columns and 111 rows for 8 time steps of 3hrs interval (00,03,06, ..., 21)<br> <br> 2) I need to automatically extract the Maximum and Minimum data between (00 hr and 21hr) at 36 selected grid points from this data set.<br> 3) The data consist of 2 years data.<br> <br> Your help will be appreciated.<br> <br> Thanks,<br> Idowu <br><br><b><i></i></b><br><p> 
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