datastream, year, month, tod,n, min, max, mean, std
twpcmbeC2.c1,2003,04 0:30:00,23 ,       0,74.75626,28.19911,24.28903
twpcmbeC2.c1,2003,04 1:30:00,24 ,       0,98.17298,33.77881,25.58355
twpcmbeC2.c1,2003,04 2:30:00,24 ,       0,115.8185,27.43003,28.29891
twpcmbeC2.c1,2003,04 3:30:00,21 ,       0,60.41294,22.51217,18.75377
twpcmbeC2.c1,2003,04 4:30:00,22 ,0.900376,101.9816,30.25756,29.23046
twpcmbeC2.c1,2003,04 5:30:00,21 , 0.47242,93.89135,28.79852,27.37162
twpcmbeC2.c1,2003,04 6:30:00,22 ,1.795909,141.8659,31.87663,40.49153
twpcmbeC2.c1,2003,04 7:30:00,21 ,       0,132.1475,25.04805,30.98212
twpcmbeC2.c1,2003,04 8:30:00,21 ,       0,78.49029,22.51756,21.23159
twpcmbeC2.c1,2003,04 9:30:00,21 ,0.309519,88.83514,20.17127,24.36832
twpcmbeC2.c1,2003,0410:30:00,21 ,0.165246, 77.4232,17.07043,18.93487
twpcmbeC2.c1,2003,0411:30:00,21 ,0.256312,124.0227,22.17188,26.26694
twpcmbeC2.c1,2003,0412:30:00,21 ,0.224834,77.60601,17.65061,17.13302
twpcmbeC2.c1,2003,0413:30:00,20 ,       0,52.54636,15.56447,15.68782
twpcmbeC2.c1,2003,0414:30:00,21 ,1.082315,92.83336,22.52308,20.73195
twpcmbeC2.c1,2003,0415:30:00,21 ,       0,94.52595,19.55821,21.76314
twpcmbeC2.c1,2003,0416:30:00,23 ,       0, 99.3281,22.26083,25.29461
twpcmbeC2.c1,2003,0417:30:00,25 ,       0,177.5943,33.55488,37.33506
twpcmbeC2.c1,2003,0418:30:00,24 ,       0,88.74206,26.58673,28.56682
twpcmbeC2.c1,2003,0419:30:00,22 ,       0,144.4862,30.21654,33.08661
twpcmbeC2.c1,2003,0420:30:00,19 ,       0,55.38918,18.03313,18.66239
twpcmbeC2.c1,2003,0421:30:00,20 ,       0,80.53351,20.80713,22.83113
twpcmbeC2.c1,2003,0422:30:00,20 ,       0,109.0657,27.59922,36.50488
twpcmbeC2.c1,2003,0423:30:00,23 ,       0,75.79562,27.22356, 21.6497