DSET ^pna.z500.monthly.nh_tele.djfeof.dat UNDEF -9999 TITLE SST EOF 1--8 OPTIONS 365_day_calendar XDEF 57 LINEAR 160.00 2.50 YDEF 29 LINEAR 10.00 2.50 ZDEF 8 LINEAR 1.00 1.00 TDEF 1 LINEAR JAN1979 1mo VARS 1 eof 8 99 Each (fictitious) level corresponds to one EOF. ENDVARS