datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,11 0:30:00,24 ,       0,0.077251,0.003219,0.015769
sgpcmbeC1.c1,2007,11 1:30:00,27 ,       0,0.300324,0.011123,0.057797
sgpcmbeC1.c1,2007,11 2:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,11 3:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,11 4:30:00,25 ,       0,1.901309,0.076052,0.380262
sgpcmbeC1.c1,2007,11 5:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,11 6:30:00,30 ,       0,0.026829,0.000947, 0.00489
sgpcmbeC1.c1,2007,11 7:30:00,30 ,0.000689,49.68179,15.51952,14.21106
sgpcmbeC1.c1,2007,11 8:30:00,28 ,0.004024,204.5547,112.4749,62.52836
sgpcmbeC1.c1,2007,11 9:30:00,28 ,0.095085,367.6544,216.6953,121.0432
sgpcmbeC1.c1,2007,1110:30:00,29 , 0.22361,491.6216,306.5049,170.0974
sgpcmbeC1.c1,2007,1111:30:00,29 ,0.468643,564.9395,355.3939,189.3891
sgpcmbeC1.c1,2007,1112:30:00,29 ,0.198029, 579.197,391.8338,187.5154
sgpcmbeC1.c1,2007,1113:30:00,29 ,0.049133,534.1932,337.9832,185.1754
sgpcmbeC1.c1,2007,1114:30:00,29 ,0.008835,432.2716,263.2764,150.8945
sgpcmbeC1.c1,2007,1115:30:00,29 ,       0,273.6454,158.0101,93.03598
sgpcmbeC1.c1,2007,1116:30:00,30 ,       0,114.4526,49.81322,37.26486
sgpcmbeC1.c1,2007,1117:30:00,30 ,       0,9.078291,1.694329,2.010974
sgpcmbeC1.c1,2007,1118:30:00,29 ,       0, 1.06848,0.077714,0.237188
sgpcmbeC1.c1,2007,1119:30:00,29 ,       0,0.467067,0.026543,0.096869
sgpcmbeC1.c1,2007,1120:30:00,28 ,       0,0.237236,0.014141, 0.05301
sgpcmbeC1.c1,2007,1121:30:00,28 ,       0,2.561928,0.120436,0.490915
sgpcmbeC1.c1,2007,1122:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,1123:30:00,27 ,       0,0.241304,0.011613, 0.04796