datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,09 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,09 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,09 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,09 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,09 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,09 5:30:00,29 ,       0,0.054358,0.001874,0.010094
sgpcmbeC1.c1,2003,09 6:30:00,30 ,0.184068,41.36322,16.94898,10.65583
sgpcmbeC1.c1,2003,09 7:30:00,30 ,7.895027,130.3487,65.50806,32.45425
sgpcmbeC1.c1,2003,09 8:30:00,30 ,29.75439,234.5688,104.6499,61.64845
sgpcmbeC1.c1,2003,09 9:30:00,30 ,26.93491,338.5217,143.3145,86.21015
sgpcmbeC1.c1,2003,0910:30:00,30 ,54.34291,384.4483,185.2758,103.1924
sgpcmbeC1.c1,2003,0911:30:00,30 ,61.82193,437.4515,191.2779,115.0461
sgpcmbeC1.c1,2003,0912:30:00,30 ,  28.632, 552.649,208.6332,135.3147
sgpcmbeC1.c1,2003,0913:30:00,30 ,61.12111,515.1296,217.1098,134.7233
sgpcmbeC1.c1,2003,0914:30:00,30 ,47.27377,452.4693,188.6245,106.2316
sgpcmbeC1.c1,2003,0915:30:00,30 ,37.96252,309.8982,150.4468,80.04853
sgpcmbeC1.c1,2003,0916:30:00,30 ,8.107176,245.3347,105.2582,52.23756
sgpcmbeC1.c1,2003,0917:30:00,30 ,3.517625,146.2317,64.73565,29.38064
sgpcmbeC1.c1,2003,0918:30:00,30 ,       0, 33.1134,11.96368,8.653243
sgpcmbeC1.c1,2003,0919:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0920:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0921:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0922:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0923:30:00,30 ,       0,       0,       0,       0