datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,06 0:30:00,30 ,       0,0.038728,0.001291,0.007071
sgpcmbeC1.c1,1997,06 1:30:00,30 ,       0, 0.20797,0.006932, 0.03797
sgpcmbeC1.c1,1997,06 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,06 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,06 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,06 5:30:00,30 , 0.00293,16.81028,4.879306,5.072034
sgpcmbeC1.c1,1997,06 6:30:00,30 ,0.001917,142.4785,56.89582,49.15368
sgpcmbeC1.c1,1997,06 7:30:00,30 ,0.171669,323.5267,146.4199,119.9537
sgpcmbeC1.c1,1997,06 8:30:00,30 ,0.031105,510.3795,261.5269,204.9108
sgpcmbeC1.c1,1997,06 9:30:00,30 ,0.315758,676.3388,348.3087,266.6359
sgpcmbeC1.c1,1997,0610:30:00,30 ,0.023991,809.3491,394.8106,283.4953
sgpcmbeC1.c1,1997,0611:30:00,30 ,0.804871,905.2434, 492.237,316.8869
sgpcmbeC1.c1,1997,0612:30:00,30 ,1.258743,915.4669,500.6028,313.8593
sgpcmbeC1.c1,1997,0613:30:00,30 ,0.500519,891.5624,448.4507,289.8902
sgpcmbeC1.c1,1997,0614:30:00,30 ,1.580734, 790.942,456.0436,253.4619
sgpcmbeC1.c1,1997,0615:30:00,30 ,1.061508,638.1262,376.6303,204.9492
sgpcmbeC1.c1,1997,0616:30:00,30 ,0.122261,470.7404,260.7451,158.7103
sgpcmbeC1.c1,1997,0617:30:00,30 , 0.00946,310.3133,151.3222,109.0466
sgpcmbeC1.c1,1997,0618:30:00,30 ,       0,150.2616,59.04229, 51.4396
sgpcmbeC1.c1,1997,0619:30:00,30 ,       0,21.46114,6.324076,5.775364
sgpcmbeC1.c1,1997,0620:30:00,30 ,       0,0.001391, 0.00007,0.000282
sgpcmbeC1.c1,1997,0621:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,0622:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,0623:30:00,30 ,       0,0.030067,0.001538,0.006134