datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,09 0:30:00,30 ,       0,0.403285,0.013443,0.073629
sgpcmbeC1.c1,2003,09 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,09 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,09 3:30:00,30 ,       0,0.305162, 0.01229,0.056516
sgpcmbeC1.c1,2003,09 4:30:00,29 ,       0,0.292555,0.015549,0.060844
sgpcmbeC1.c1,2003,09 5:30:00,29 ,       0,0.585503,0.022064,0.108833
sgpcmbeC1.c1,2003,09 6:30:00,30 ,0.184128,65.00785,25.90629,17.55206
sgpcmbeC1.c1,2003,09 7:30:00,30 ,7.966132,235.3388,139.2336,76.60794
sgpcmbeC1.c1,2003,09 8:30:00,30 ,29.86588,448.3983,278.9739,157.8576
sgpcmbeC1.c1,2003,09 9:30:00,30 ,26.95589,636.4467,433.2331,223.7428
sgpcmbeC1.c1,2003,0910:30:00,30 ,54.62001,781.4509,543.3073,249.2456
sgpcmbeC1.c1,2003,0911:30:00,30 ,62.17847, 892.571,630.3282,282.6689
sgpcmbeC1.c1,2003,0912:30:00,30 ,  28.632,923.5251,656.8225,277.6968
sgpcmbeC1.c1,2003,0913:30:00,30 ,61.28546,891.2991,656.4587,245.8133
sgpcmbeC1.c1,2003,0914:30:00,30 ,47.30208,805.5979,566.4598,215.6372
sgpcmbeC1.c1,2003,0915:30:00,30 ,37.96252,648.1212,422.1824,185.3968
sgpcmbeC1.c1,2003,0916:30:00,30 ,8.119772,466.2147,278.0418,141.6208
sgpcmbeC1.c1,2003,0917:30:00,30 , 3.52088,252.2219,134.0908,64.48866
sgpcmbeC1.c1,2003,0918:30:00,30 ,       0,55.60753, 18.9246,16.35565
sgpcmbeC1.c1,2003,0919:30:00,30 ,       0,1.810858,0.153435,0.397827
sgpcmbeC1.c1,2003,0920:30:00,30 ,       0,1.849095,0.095529,0.352555
sgpcmbeC1.c1,2003,0921:30:00,30 ,       0, 1.63729,0.077302,0.307499
sgpcmbeC1.c1,2003,0922:30:00,30 ,       0,2.300069,0.163244,0.473984
sgpcmbeC1.c1,2003,0923:30:00,30 ,       0,1.105825,0.091762, 0.27663