<BODY><P>Hello all,</P>
<P>I'm using data of the reanalysis for period 1961-1990. I have 30 files, one per year and need to calculate the average of precipitation for that period.</P>
<P>There is some simplified form to do it?</P>
<P>Thanks in advance,<BR><BR>Luis Fernando Montana Roa<BR>Posgrado de Meteorologia<BR>Universidad Nacional de Colombia<BR>Bogota - Colombia - South America</P></BODY>