datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,09 0:30:00,30 ,       0,0.733329,0.112446,0.200985
sgpcmbeC1.c1,2004,09 1:30:00,30 ,       0,1.656121,  0.2299,0.458709
sgpcmbeC1.c1,2004,09 2:30:00,30 ,       0,0.206657,0.029378,0.063397
sgpcmbeC1.c1,2004,09 3:30:00,30 ,       0,0.684156,0.069195,  0.1687
sgpcmbeC1.c1,2004,09 4:30:00,30 ,       0,0.866872,0.057101,0.190348
sgpcmbeC1.c1,2004,09 5:30:00,30 ,       0,0.631593,0.130344,0.203724
sgpcmbeC1.c1,2004,09 6:30:00,30 ,3.982941,53.73502,31.60892,13.46562
sgpcmbeC1.c1,2004,09 7:30:00,30 ,30.96317,246.3134,181.0539,52.56845
sgpcmbeC1.c1,2004,09 8:30:00,30 ,80.15648,459.2865,382.3363,86.99678
sgpcmbeC1.c1,2004,09 9:30:00,30 ,312.2157,646.1553,560.7648,78.12797
sgpcmbeC1.c1,2004,0910:30:00,30 , 413.006,794.0654,706.1531,90.28582
sgpcmbeC1.c1,2004,0911:30:00,30 ,367.5782,885.4278,776.7058,105.1549
sgpcmbeC1.c1,2004,0912:30:00,30 ,483.5098,921.3671,801.7561,105.9252
sgpcmbeC1.c1,2004,0913:30:00,30 ,341.9247,886.4299,715.8721,152.7873
sgpcmbeC1.c1,2004,0914:30:00,30 ,104.2371,849.6361,620.3914,176.4429
sgpcmbeC1.c1,2004,0915:30:00,30 ,106.0006,639.9763,488.1626,136.1126
sgpcmbeC1.c1,2004,0916:30:00,30 ,80.37227,463.3324,335.0136,94.86105
sgpcmbeC1.c1,2004,0917:30:00,30 ,51.43846,232.6495,150.1914,  53.382
sgpcmbeC1.c1,2004,0918:30:00,30 ,3.011546,51.27493,21.30752,15.78569
sgpcmbeC1.c1,2004,0919:30:00,30 ,       0,0.896301,0.093098,0.244436
sgpcmbeC1.c1,2004,0920:30:00,30 ,       0,0.699867,0.023329,0.127778
sgpcmbeC1.c1,2004,0921:30:00,30 ,       0,0.511289,0.049589,0.126366
sgpcmbeC1.c1,2004,0922:30:00,30 ,       0,1.243333,0.076413,0.243878
sgpcmbeC1.c1,2004,0923:30:00,30 ,       0,1.940383,0.165286,0.448896