datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,07 0:30:00,31 ,       0,0.311301,0.014514,0.060441
sgpcmbeC1.c1,1998,07 1:30:00,31 ,       0,0.282216,0.013562,0.055692
sgpcmbeC1.c1,1998,07 2:30:00,31 ,       0,0.313033,0.018267, 0.06202
sgpcmbeC1.c1,1998,07 3:30:00,31 ,       0,0.088006,0.004942,0.017457
sgpcmbeC1.c1,1998,07 4:30:00,31 ,       0,0.073008,0.002355,0.013113
sgpcmbeC1.c1,1998,07 5:30:00,31 ,0.001233,9.146962,2.641576,2.986775
sgpcmbeC1.c1,1998,07 6:30:00,31 ,0.024033,43.53541, 21.4063,16.95161
sgpcmbeC1.c1,1998,07 7:30:00,31 ,0.037749,81.04366,38.08774,24.28826
sgpcmbeC1.c1,1998,07 8:30:00,31 ,0.136501,147.0592,58.68102,39.15867
sgpcmbeC1.c1,1998,07 9:30:00,31 ,0.493838,212.7935,74.25107,61.63759
sgpcmbeC1.c1,1998,0710:30:00,31 ,1.048869,242.3221,81.42871,69.56773
sgpcmbeC1.c1,1998,0711:30:00,31 ,10.75213,276.6226,111.8697,90.88265
sgpcmbeC1.c1,1998,0712:30:00,31 ,3.274414, 318.039,139.7192, 99.5082
sgpcmbeC1.c1,1998,0713:30:00,31 , 13.6597,326.2085,140.2479,102.0296
sgpcmbeC1.c1,1998,0714:30:00,31 ,1.538239,271.8316,116.4051,82.14824
sgpcmbeC1.c1,1998,0715:30:00,31 ,33.03573,266.6067,126.8719,70.60722
sgpcmbeC1.c1,1998,0716:30:00,31 ,2.704325,200.0358,81.22223,49.32041
sgpcmbeC1.c1,1998,0717:30:00,31 ,1.001262, 155.871,63.57153,30.40361
sgpcmbeC1.c1,1998,0718:30:00,31 ,0.261528,62.51128, 35.7894,13.59568
sgpcmbeC1.c1,1998,0719:30:00,31 ,0.000419,16.04785,6.990279,4.997229
sgpcmbeC1.c1,1998,0720:30:00,31 ,       0,0.008128,0.000262, 0.00146
sgpcmbeC1.c1,1998,0721:30:00,31 ,       0,  0.0198,0.000639,0.003556
sgpcmbeC1.c1,1998,0722:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0723:30:00,31 ,       0,0.108834,0.003511,0.019547