datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,06 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,06 1:30:00,30 ,       0,0.274721,0.009157,0.050157
sgpcmbeC1.c1,2006,06 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,06 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,06 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,06 5:30:00,30 ,       0,22.60055,12.48009,4.923132
sgpcmbeC1.c1,2006,06 6:30:00,30 ,6.411185,60.32353, 17.3799,12.45347
sgpcmbeC1.c1,2006,06 7:30:00,30 ,3.332051,61.96503,17.23374,15.54516
sgpcmbeC1.c1,2006,06 8:30:00,30 ,1.918081,50.36063,17.84287,16.75895
sgpcmbeC1.c1,2006,06 9:30:00,30 , 0.93613, 77.8636,18.99469,23.18822
sgpcmbeC1.c1,2006,0610:30:00,30 ,1.126215,110.2212,18.67502,24.55469
sgpcmbeC1.c1,2006,0611:30:00,30 ,1.038996,134.3252,21.39396,30.22641
sgpcmbeC1.c1,2006,0612:30:00,30 ,0.730927,137.3257,24.17207,29.01431
sgpcmbeC1.c1,2006,0613:30:00,30 ,0.470326,176.6667,30.21162,38.26626
sgpcmbeC1.c1,2006,0614:30:00,30 ,0.891615, 103.271,30.92216,33.01911
sgpcmbeC1.c1,2006,0615:30:00,30 , 1.57253,133.3824,30.20243,33.92696
sgpcmbeC1.c1,2006,0616:30:00,30 ,2.391524,77.65497,17.18457,16.30014
sgpcmbeC1.c1,2006,0617:30:00,30 , 3.51257,63.32917,15.06379, 14.2848
sgpcmbeC1.c1,2006,0618:30:00,30 ,7.096487,40.54431,15.96665,9.225735
sgpcmbeC1.c1,2006,0619:30:00,30 ,7.595777,21.84693,13.66802,2.866025
sgpcmbeC1.c1,2006,0620:30:00,30 ,       0,1.258879,0.042288,0.229784
sgpcmbeC1.c1,2006,0621:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0622:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0623:30:00,30 ,       0,       0,       0,       0