datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,06 0:30:00,25 ,       0,49.74375,5.797755,12.30676
sgpcmbeC1.c1,2005,06 1:30:00,25 ,       0,143.0267,17.95428,44.89711
sgpcmbeC1.c1,2005,06 2:30:00,24 ,       0,381.7853,20.33523,77.89888
sgpcmbeC1.c1,2005,06 3:30:00,25 ,       0,336.2534, 34.2717,88.73087
sgpcmbeC1.c1,2005,06 4:30:00,25 ,       0,366.1347,34.08068,91.96785
sgpcmbeC1.c1,2005,06 5:30:00,25 ,       0,291.4467,21.78606,69.60187
sgpcmbeC1.c1,2005,06 6:30:00,24 ,       0,165.4872,9.895224,33.94886
sgpcmbeC1.c1,2005,06 7:30:00,24 ,       0,181.1316,11.39304,37.11993
sgpcmbeC1.c1,2005,06 8:30:00,25 ,       0,51.87848,6.183097,11.05936
sgpcmbeC1.c1,2005,06 9:30:00,26 ,       0,33.29042,5.912132,9.689461
sgpcmbeC1.c1,2005,0610:30:00,28 ,       0, 147.754,15.72882,31.77272
sgpcmbeC1.c1,2005,0611:30:00,28 ,       0,186.7974, 21.1654,42.60646
sgpcmbeC1.c1,2005,0612:30:00,27 ,       0,83.14851,13.17432,24.17088
sgpcmbeC1.c1,2005,0613:30:00,27 ,       0,95.73878,15.80856,27.21345
sgpcmbeC1.c1,2005,0614:30:00,27 ,       0,125.0406,24.38968,40.32307
sgpcmbeC1.c1,2005,0615:30:00,27 ,       0,130.4688,21.74812,33.31113
sgpcmbeC1.c1,2005,0616:30:00,26 ,       0,167.3299,18.46572,42.66906
sgpcmbeC1.c1,2005,0617:30:00,26 ,       0,212.4756,19.78144,48.28213
sgpcmbeC1.c1,2005,0618:30:00,27 ,       0,152.3308,12.94852,33.46577
sgpcmbeC1.c1,2005,0619:30:00,27 ,       0,229.6562,16.60667, 53.7902
sgpcmbeC1.c1,2005,0620:30:00,26 ,       0, 137.843, 7.50902,27.16694
sgpcmbeC1.c1,2005,0621:30:00,26 ,       0,160.4882,8.744587,31.73731
sgpcmbeC1.c1,2005,0622:30:00,26 ,       0, 423.894,20.98241,82.64779
sgpcmbeC1.c1,2005,0623:30:00,26 ,       0,242.2696,16.18716,48.95987