datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,10 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,10 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,10 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,10 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,10 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,10 5:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,10 6:30:00,31 ,       0,4.652193,0.802489,1.197495
sgpcmbeC1.c1,2002,10 7:30:00,31 ,0.057263,42.60425,13.17704,13.42413
sgpcmbeC1.c1,2002,10 8:30:00,31 ,1.046983,84.89373,34.17895,30.26914
sgpcmbeC1.c1,2002,10 9:30:00,31 ,2.110393,120.7222,50.21254,  42.884
sgpcmbeC1.c1,2002,1010:30:00,31 ,3.349203,155.2732, 69.2856,53.33391
sgpcmbeC1.c1,2002,1011:30:00,31 ,7.323144, 158.751,80.76698,57.40449
sgpcmbeC1.c1,2002,1012:30:00,31 ,2.510686,160.6898,84.43368,55.39955
sgpcmbeC1.c1,2002,1013:30:00,31 ,7.179226, 153.268,79.62112,54.15359
sgpcmbeC1.c1,2002,1014:30:00,31 ,2.324782,135.6462,70.86921,47.55309
sgpcmbeC1.c1,2002,1015:30:00,31 ,2.064251,106.6447,52.31788,38.66376
sgpcmbeC1.c1,2002,1016:30:00,31 ,1.555605,69.70757,30.69164,24.74883
sgpcmbeC1.c1,2002,1017:30:00,31 ,       0,29.09159,9.125188,9.062081
sgpcmbeC1.c1,2002,1018:30:00,31 ,       0,0.162743,0.014405, 0.04137
sgpcmbeC1.c1,2002,1019:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,1020:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,1021:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,1022:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,1023:30:00,30 ,       0,       0,       0,       0