datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,04 0:30:00,19 ,       0,0.050115,0.002638,0.011497
sgpcmbeC1.c1,1999,04 1:30:00,19 ,       0,0.387191,0.020378,0.088828
sgpcmbeC1.c1,1999,04 2:30:00,19 ,       0, 0.75065,0.054062,0.180187
sgpcmbeC1.c1,1999,04 3:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,04 4:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,04 5:30:00,19 ,       0,1.287339,0.204676,0.344806
sgpcmbeC1.c1,1999,04 6:30:00,19 , 2.39393,84.09132, 42.9281,26.27369
sgpcmbeC1.c1,1999,04 7:30:00,19 ,27.04692,287.3037, 174.116,85.72863
sgpcmbeC1.c1,1999,04 8:30:00,18 ,32.90699,498.1715,347.6543,158.5865
sgpcmbeC1.c1,1999,04 9:30:00,18 ,36.78609,686.5905,531.2713,200.1904
sgpcmbeC1.c1,1999,0410:30:00,18 ,65.16575,834.5432,626.5847,261.5021
sgpcmbeC1.c1,1999,0411:30:00,18 , 32.4486,928.8976,728.3399,265.5032
sgpcmbeC1.c1,1999,0412:30:00,18 ,175.6662,959.5223,741.7293,254.6221
sgpcmbeC1.c1,1999,0413:30:00,18 ,65.97009,936.4108,690.5332,294.9296
sgpcmbeC1.c1,1999,0414:30:00,18 ,33.79174,825.4177,603.8157, 252.345
sgpcmbeC1.c1,1999,0415:30:00,18 ,16.52431, 679.421,492.1666,182.0945
sgpcmbeC1.c1,1999,0416:30:00,18 ,15.59052,490.4815,358.6456,136.3878
sgpcmbeC1.c1,1999,0417:30:00,18 ,17.95016,280.1759,185.9968,85.52424
sgpcmbeC1.c1,1999,0418:30:00,18 ,2.758314,84.25906,46.97335,25.55284
sgpcmbeC1.c1,1999,0419:30:00,18 ,       0,1.902483,0.412003,0.536057
sgpcmbeC1.c1,1999,0420:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0421:30:00,18 ,       0,0.215054,0.011947,0.050689
sgpcmbeC1.c1,1999,0422:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0423:30:00,18 ,       0,       0,       0,       0