datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,06 0:30:00,27 ,       0,0.159777, 0.02039,0.048776
sgpcmbeC1.c1,2005,06 1:30:00,27 ,       0,0.300941,0.013603,0.058529
sgpcmbeC1.c1,2005,06 2:30:00,27 ,       0,0.213485,0.015133,0.054583
sgpcmbeC1.c1,2005,06 3:30:00,27 ,       0,0.044295,0.002226, 0.00894
sgpcmbeC1.c1,2005,06 4:30:00,27 ,       0,0.000083,3.076E-6,0.000016
sgpcmbeC1.c1,2005,06 5:30:00,27 ,       0,12.16257,4.148953,3.239107
sgpcmbeC1.c1,2005,06 6:30:00,27 ,0.000025,125.4886,59.44402,34.68112
sgpcmbeC1.c1,2005,06 7:30:00,27 ,0.162172,286.8178,175.5683,84.29726
sgpcmbeC1.c1,2005,06 8:30:00,28 , 19.3916,518.4865,295.2655, 142.885
sgpcmbeC1.c1,2005,06 9:30:00,28 ,29.85541,651.7427,456.9285,159.5021
sgpcmbeC1.c1,2005,0610:30:00,28 , 0.06728,786.3565,533.7536,  186.56
sgpcmbeC1.c1,2005,0611:30:00,28 ,65.31673,844.2999,595.2306, 219.781
sgpcmbeC1.c1,2005,0612:30:00,27 ,198.5287,892.7873,648.7306,  181.35
sgpcmbeC1.c1,2005,0613:30:00,27 ,156.1322,866.6703,576.4684,221.7585
sgpcmbeC1.c1,2005,0614:30:00,27 ,0.363464,730.7106,506.5175,233.5878
sgpcmbeC1.c1,2005,0615:30:00,27 ,0.657425,639.8455,407.1203,213.6146
sgpcmbeC1.c1,2005,0616:30:00,27 , 0.00079,471.9808,295.9681,159.5198
sgpcmbeC1.c1,2005,0617:30:00,27 , 0.10231,301.5765,182.9289,102.1524
sgpcmbeC1.c1,2005,0618:30:00,27 ,       0,124.1985,64.76878,43.55172
sgpcmbeC1.c1,2005,0619:30:00,27 ,       0,13.88323,5.579592,4.522126
sgpcmbeC1.c1,2005,0620:30:00,27 ,       0,0.006616,0.000334,0.001338
sgpcmbeC1.c1,2005,0621:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0622:30:00,27 ,       0,0.079182,0.005826,0.020993
sgpcmbeC1.c1,2005,0623:30:00,27 ,       0,0.218136,0.008597,0.041963