01/01/1981 00:00:00 4470 "mm"
01/01/1981 01:00:00 4215 "mm"
01/01/1981 02:00:00 3780 "mm"
01/01/1981 03:00:00 3420 "mm"
01/01/1981 04:00:00 3210 "mm"
01/01/1981 05:00:00 3120 "mm"
01/01/1981 06:00:00 3285 "mm"
01/01/1981 07:00:00 3540 "mm"
01/01/1981 08:00:00 3930 "mm"
01/01/1981 09:00:00 4305 "mm"
01/01/1981 10:00:00 4545 "mm"
01/01/1981 11:00:00 4650 "mm"
01/01/1981 12:00:00 4515 "mm"
01/01/1981 13:00:00 4275 "mm"
01/01/1981 14:00:00 3870 "mm"
01/01/1981 15:00:00 3450 "mm"
01/01/1981 16:00:00 3150 "mm"
01/01/1981 17:00:00 2955 "mm"
01/01/1981 18:00:00 3015 "mm"
01/01/1981 19:00:00 3225 "mm"
01/01/1981 20:00:00 3615 "mm"
01/01/1981 21:00:00 4050 "mm"
01/01/1981 22:00:00 2985 "mm"
01/01/1981 23:00:00 4695 "mm"