datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,09 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 6:30:00,30 ,       0,117.1181,11.00401, 22.4039
sgpcmbeC1.c1,2007,09 7:30:00,30 ,0.092833,191.7956,72.30723,63.55189
sgpcmbeC1.c1,2007,09 8:30:00,30 ,0.139984,382.3181,157.5072,133.7107
sgpcmbeC1.c1,2007,09 9:30:00,29 ,       0,566.8134,265.4537,211.0033
sgpcmbeC1.c1,2007,0910:30:00,30 ,       0,708.3905,330.6426,266.7606
sgpcmbeC1.c1,2007,0911:30:00,30 ,       0,795.6933,402.8028,281.2849
sgpcmbeC1.c1,2007,0912:30:00,30 ,       0,825.3235,393.2966,298.2773
sgpcmbeC1.c1,2007,0913:30:00,30 ,       0,789.9099,342.4191,280.2549
sgpcmbeC1.c1,2007,0914:30:00,30 ,       0, 692.622,319.7861,244.2599
sgpcmbeC1.c1,2007,0915:30:00,30 ,       0,547.9414,268.2583,196.9011
sgpcmbeC1.c1,2007,0916:30:00,30 ,16.96207, 366.119, 180.315,115.8616
sgpcmbeC1.c1,2007,0917:30:00,30 ,       0,185.9785,  66.931, 53.4285
sgpcmbeC1.c1,2007,0918:30:00,29 ,       0,33.95991,6.005625,9.607546
sgpcmbeC1.c1,2007,0919:30:00,29 ,       0,0.622286,0.042862,0.139116
sgpcmbeC1.c1,2007,0920:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0921:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0922:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0923:30:00,29 ,       0,       0,       0,       0