datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,06 0:30:00,29 ,       0,0.215027,0.008495,0.040145
sgpcmbeC1.c1,2004,06 1:30:00,29 ,       0,0.149001,0.009038,0.030262
sgpcmbeC1.c1,2004,06 2:30:00,30 ,       0,0.088649,0.006028,0.021249
sgpcmbeC1.c1,2004,06 3:30:00,30 ,       0,0.030486,0.002013,0.007661
sgpcmbeC1.c1,2004,06 4:30:00,30 ,       0,0.005911,0.000199,0.001079
sgpcmbeC1.c1,2004,06 5:30:00,30 ,0.001509,15.11881,2.914389,4.762909
sgpcmbeC1.c1,2004,06 6:30:00,30 ,       0,142.3112,38.13729,50.61452
sgpcmbeC1.c1,2004,06 7:30:00,30 ,0.014771,333.5867,90.52336,120.0802
sgpcmbeC1.c1,2004,06 8:30:00,29 ,       0,524.1442,182.0016,201.8583
sgpcmbeC1.c1,2004,06 9:30:00,28 ,0.029919, 697.861,271.0341,264.9635
sgpcmbeC1.c1,2004,0610:30:00,29 ,0.186028,834.5053,284.9973,309.4646
sgpcmbeC1.c1,2004,0611:30:00,28 ,0.022366,920.1107,357.9619,357.7806
sgpcmbeC1.c1,2004,0612:30:00,27 ,0.229207,  936.89,452.6297,370.4139
sgpcmbeC1.c1,2004,0613:30:00,28 ,0.042717,918.9271,418.5636,336.8626
sgpcmbeC1.c1,2004,0614:30:00,29 ,0.146027, 835.246,433.8199, 289.373
sgpcmbeC1.c1,2004,0615:30:00,28 ,0.248444,709.4877,395.7958, 234.306
sgpcmbeC1.c1,2004,0616:30:00,28 ,0.078598,542.5493,274.9878,183.5247
sgpcmbeC1.c1,2004,0617:30:00,28 ,0.873932,351.3812,176.6764,109.3203
sgpcmbeC1.c1,2004,0618:30:00,29 ,       0,156.7931,64.68584,50.02509
sgpcmbeC1.c1,2004,0619:30:00,29 ,       0,20.74021,5.705659,6.249782
sgpcmbeC1.c1,2004,0620:30:00,29 ,       0,  0.0152,0.000885,0.003117
sgpcmbeC1.c1,2004,0621:30:00,28 ,       0,0.015547,0.000892,0.003379
sgpcmbeC1.c1,2004,0622:30:00,27 ,       0,0.031652,0.001358,0.006131
sgpcmbeC1.c1,2004,0623:30:00,27 ,       0,0.131493, 0.00487,0.025306