datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,09 0:30:00,30 , 0.74778,16.53308,3.757451,4.023992
sgpcmbeC1.c1,2006,09 1:30:00,30 ,0.487173,16.00497,4.035356,4.594004
sgpcmbeC1.c1,2006,09 2:30:00,30 ,0.567302,20.38246,4.232701,4.859563
sgpcmbeC1.c1,2006,09 3:30:00,30 ,0.563474,19.47077,3.713755,4.460167
sgpcmbeC1.c1,2006,09 4:30:00,30 ,0.506752,20.22823,3.106758,4.103234
sgpcmbeC1.c1,2006,09 5:30:00,30 ,0.580016,25.76449,3.603758,5.843226
sgpcmbeC1.c1,2006,09 6:30:00,30 ,0.529448,17.69183,3.284893,3.783988
sgpcmbeC1.c1,2006,09 7:30:00,30 ,1.197224,16.16036,4.236023,3.982367
sgpcmbeC1.c1,2006,09 8:30:00,30 ,0.909493,17.91323,4.368982,3.689965
sgpcmbeC1.c1,2006,09 9:30:00,30 ,0.538112,16.10004,3.786927,3.532916
sgpcmbeC1.c1,2006,0910:30:00,30 ,0.742121,16.45488, 3.42133,3.307791
sgpcmbeC1.c1,2006,0911:30:00,30 ,0.730273,16.36805,4.179239,4.281282
sgpcmbeC1.c1,2006,0912:30:00,30 ,1.019356,17.55838,4.070988,4.203827
sgpcmbeC1.c1,2006,0913:30:00,30 , 1.21769,14.95334,3.732409,3.255081
sgpcmbeC1.c1,2006,0914:30:00,30 , 0.52867,14.64147,3.731868,3.269552
sgpcmbeC1.c1,2006,0915:30:00,30 ,0.934494,14.51293,3.587243,3.348057
sgpcmbeC1.c1,2006,0916:30:00,30 ,0.837334,21.19874,3.893783, 4.66672
sgpcmbeC1.c1,2006,0917:30:00,30 ,0.542862,16.68906,4.884681,4.883087
sgpcmbeC1.c1,2006,0918:30:00,30 ,1.074456,17.98778,4.091487,3.653254
sgpcmbeC1.c1,2006,0919:30:00,30 ,0.994511,10.88187,3.477443,2.646963
sgpcmbeC1.c1,2006,0920:30:00,30 ,0.465353,10.11504,2.642509,2.651276
sgpcmbeC1.c1,2006,0921:30:00,30 ,0.540986,18.73293, 3.08321,  3.8282
sgpcmbeC1.c1,2006,0922:30:00,30 ,0.443241,13.55752,2.854163,2.838378
sgpcmbeC1.c1,2006,0923:30:00,30 ,0.742924,9.891768,2.150913,2.078441