datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,07 0:30:00,31 ,       0,0.331062,0.015604,0.064548
sgpcmbeC1.c1,2002,07 1:30:00,31 ,       0,0.205816,0.014011,0.042106
sgpcmbeC1.c1,2002,07 2:30:00,31 ,       0,0.297729,0.015907, 0.05863
sgpcmbeC1.c1,2002,07 3:30:00,31 ,       0,0.340973,0.017746,0.069268
sgpcmbeC1.c1,2002,07 4:30:00,31 ,       0,0.080914,0.004614,0.018024
sgpcmbeC1.c1,2002,07 5:30:00,31 ,0.002245,3.709217,1.398995,1.011622
sgpcmbeC1.c1,2002,07 6:30:00,31 ,0.230377, 82.1384,41.27247,27.77392
sgpcmbeC1.c1,2002,07 7:30:00,31 ,0.239655,254.1874,132.1657,89.20147
sgpcmbeC1.c1,2002,07 8:30:00,31 ,0.615669,440.4492,250.9906,162.1758
sgpcmbeC1.c1,2002,07 9:30:00,31 ,2.062195,612.6118,362.8335,224.2877
sgpcmbeC1.c1,2002,0710:30:00,31 ,5.278091,768.9213,446.9387,268.5292
sgpcmbeC1.c1,2002,0711:30:00,31 ,1.587952, 863.761,516.7419,269.4966
sgpcmbeC1.c1,2002,0712:30:00,31 ,0.201477,877.1368,  539.71,289.9886
sgpcmbeC1.c1,2002,0713:30:00,31 , 0.53241,844.8876,480.8612,273.0473
sgpcmbeC1.c1,2002,0714:30:00,31 ,0.830017,769.9636,419.2449,255.7589
sgpcmbeC1.c1,2002,0715:30:00,31 ,2.641876,648.8564,363.9441,203.1127
sgpcmbeC1.c1,2002,0716:30:00,31 ,0.939117,484.7079,276.4404,154.4825
sgpcmbeC1.c1,2002,0717:30:00,31 ,0.437967,296.1106, 148.493,93.56287
sgpcmbeC1.c1,2002,0718:30:00,31 ,       0,123.2792,55.96353,37.75094
sgpcmbeC1.c1,2002,0719:30:00,31 ,0.227547,12.29145,4.287946,3.746883
sgpcmbeC1.c1,2002,0720:30:00,31 ,       0,1.083903,0.197645,0.316953
sgpcmbeC1.c1,2002,0721:30:00,31 ,       0,0.441169,0.027586,0.087503
sgpcmbeC1.c1,2002,0722:30:00,31 ,       0,0.178182,0.005748,0.032002
sgpcmbeC1.c1,2002,0723:30:00,31 ,       0,       0,       0,       0