datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,10 0:30:00,31 ,       0,1.196324,0.187401,0.374203
sgpcmbeC1.c1,2004,10 1:30:00,31 ,       0,1.305415,0.197226,0.341949
sgpcmbeC1.c1,2004,10 2:30:00,31 ,       0,1.053588,0.116924,0.291438
sgpcmbeC1.c1,2004,10 3:30:00,31 ,       0,1.599301,0.214632,0.469011
sgpcmbeC1.c1,2004,10 4:30:00,31 ,       0,1.608877,0.160119, 0.39891
sgpcmbeC1.c1,2004,10 5:30:00,31 ,       0, 1.51121,0.114687,0.349466
sgpcmbeC1.c1,2004,10 6:30:00,31 ,       0,13.66565,5.317855,3.406093
sgpcmbeC1.c1,2004,10 7:30:00,31 ,1.338529,67.91251,18.59803,15.00284
sgpcmbeC1.c1,2004,10 8:30:00,30 ,3.171493,51.90502,20.62029,13.77961
sgpcmbeC1.c1,2004,10 9:30:00,30 ,1.412514, 110.253,31.24065,26.08532
sgpcmbeC1.c1,2004,1010:30:00,30 ,1.093549,113.1443,36.13663,30.40219
sgpcmbeC1.c1,2004,1011:30:00,30 ,0.865872,123.0164, 40.3763,32.53544
sgpcmbeC1.c1,2004,1012:30:00,30 ,0.903222,133.1785,34.72241,30.01637
sgpcmbeC1.c1,2004,1013:30:00,30 ,0.769292,114.9574,44.79697,  33.719
sgpcmbeC1.c1,2004,1014:30:00,30 ,1.398938,89.37214,32.44441,21.44019
sgpcmbeC1.c1,2004,1015:30:00,30 , 2.61665,99.51611,27.47083,23.07263
sgpcmbeC1.c1,2004,1016:30:00,30 ,3.995795,52.09407,19.47791,13.12552
sgpcmbeC1.c1,2004,1017:30:00,31 ,2.963404,36.95571,15.67138,7.607507
sgpcmbeC1.c1,2004,1018:30:00,31 ,       0,4.881104,1.339973,1.547656
sgpcmbeC1.c1,2004,1019:30:00,31 ,       0,1.479553, 0.20088,0.449929
sgpcmbeC1.c1,2004,1020:30:00,31 ,       0,1.650141,0.341463,0.489046
sgpcmbeC1.c1,2004,1021:30:00,31 ,       0,1.499034,0.215495,0.431337
sgpcmbeC1.c1,2004,1022:30:00,31 ,       0, 1.22519,0.114349, 0.31402
sgpcmbeC1.c1,2004,1023:30:00,31 ,       0,1.147424,0.218483, 0.40151