datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,09 0:30:00,29 ,       0,0.302992,0.010448,0.056264
sgpcmbeC1.c1,2007,09 1:30:00,29 ,       0,0.369393,0.022702,0.085566
sgpcmbeC1.c1,2007,09 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 3:30:00,29 ,       0,0.114744,0.005306,0.022266
sgpcmbeC1.c1,2007,09 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 5:30:00,29 ,       0,0.212752,0.018789,0.054109
sgpcmbeC1.c1,2007,09 6:30:00,30 ,0.798469,179.9474,  29.843,31.68957
sgpcmbeC1.c1,2007,09 7:30:00,30 ,13.64521,268.6787,152.4149,64.80992
sgpcmbeC1.c1,2007,09 8:30:00,30 ,66.72183,453.9557,307.4169,110.0293
sgpcmbeC1.c1,2007,09 9:30:00,30 ,159.4142,639.5305,458.1322,157.1816
sgpcmbeC1.c1,2007,0910:30:00,30 , 182.566, 788.128,540.5368,208.7465
sgpcmbeC1.c1,2007,0911:30:00,30 ,122.2287,881.3148,629.8119,239.2619
sgpcmbeC1.c1,2007,0912:30:00,30 ,126.2983,911.9794,644.5907,223.5072
sgpcmbeC1.c1,2007,0913:30:00,30 ,117.9102,875.1016, 592.455,204.3639
sgpcmbeC1.c1,2007,0914:30:00,30 ,131.7565,775.9851,536.9067,191.9971
sgpcmbeC1.c1,2007,0915:30:00,30 ,193.9969,629.7701,445.0776,133.8407
sgpcmbeC1.c1,2007,0916:30:00,30 ,169.2655,442.0506,313.2495,77.25835
sgpcmbeC1.c1,2007,0917:30:00,30 ,50.25805,240.4307,135.6159,51.99333
sgpcmbeC1.c1,2007,0918:30:00,29 ,2.634477,61.34985,18.60309,17.19196
sgpcmbeC1.c1,2007,0919:30:00,29 ,       0,1.600857,0.197957,0.466975
sgpcmbeC1.c1,2007,0920:30:00,29 ,       0,1.239031,0.067762,0.250608
sgpcmbeC1.c1,2007,0921:30:00,29 ,       0,1.664703,0.064656,0.310198
sgpcmbeC1.c1,2007,0922:30:00,29 ,       0,0.157917,0.009987,0.037509
sgpcmbeC1.c1,2007,0923:30:00,29 ,       0,0.038477,0.001327,0.007145