Hello Bill;

Use a monthly block to store your 20-min interval data,i.e., the D part of the pathname should start on the very first day of the month (01FEB2002,in your case), just as John explained.

If you're trying to store "incremental" precipitation in a DSS file then you should have the right UNIT on the 3rd line : INCH (or MM) instead of CFS; just as Jim pointed out. And if it indeed is a sort of INCREMENTAL data and not CUMULATIVE then the 4th line should read PER-AVER (i.e., AVERage for the PERiod) rather than the PER-CUM. It would also be wise to avoid using too long identifiers for the pathname parts A, B, and F.

It sure works for you too, Good Luck!

Mostafa Bozorg-Zadeh (ICE)