SQL Problem

i have a MySQL DB whit this tabel: Id ColPoint CntDateTime Cnt1 Cnt2 Cntx. Cnt32 11 2001-08-01 00:05:0012 14 21 2001-08-01 00:10:0011 12 31 2001-08-01 00:15:00109 41 2001-08-01 00:20:000

Group by

i have a tabel whit 5 min counting Id CntDateTime Cnt1 1 2001-08-01 00:05:0012 2 2001-08-01 00:10:0011 3 2001-08-01 00:15:0010 4 2001-08-01 00:20:000 5 2001-08-01 00:25:006 6 2001-08-01 00:30:0014 7 2001-08-01 00:35:0011 . . What i want is to make a