nc file averaged

Hello
      I want to use ncl or nco to get an 7 years averaged nc data from
follow input data :
     hgt.1998.nc,hgt.1999.nc,hgt2000.nc,hgt.2001.nc,hgt.2002.nc,hgt.2003.nc,
hgt.2004.nc.
in which hgt.2000.nc and hgt.2004.nc have 1464 times and the other have 1460
times
And i want a output file have 1464 times .
can anyone help me? Thank you!

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Received on Thu Dec 30 01:46:08 2010