datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,09 0:30:00,30 ,1.404496,2.783633,  2.0064,0.359434
sgpcmbeC1.c1,2004,09 1:30:00,30 ,1.392429,2.905888,2.040285,0.414102
sgpcmbeC1.c1,2004,09 2:30:00,30 ,0.814828, 2.36014,1.861255,0.355524
sgpcmbeC1.c1,2004,09 3:30:00,30 ,0.933635,2.567601,1.888461,0.422763
sgpcmbeC1.c1,2004,09 4:30:00,30 ,0.977837, 2.75713,1.922233,0.396058
sgpcmbeC1.c1,2004,09 5:30:00,30 , 0.85261,2.664309,1.936188,0.407486
sgpcmbeC1.c1,2004,09 6:30:00,30 ,4.706278,53.73502,31.83456,13.26255
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 ,3.867552,51.36095,21.82017, 15.4382
sgpcmbeC1.c1,2004,0919:30:00,30 ,0.611253,2.705859,1.785967,0.470889
sgpcmbeC1.c1,2004,0920:30:00,30 ,0.578635,2.709596,1.854511,0.445088
sgpcmbeC1.c1,2004,0921:30:00,30 ,0.375037,2.477624,1.821919,0.443629
sgpcmbeC1.c1,2004,0922:30:00,30 ,0.730999,2.692185,1.817105,0.438601
sgpcmbeC1.c1,2004,0923:30:00,30 , 0.79387,  2.8968,1.924305,0.457954