datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,05 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 5:30:00,31 ,       0,38.52279,12.57825,9.833589
sgpcmbeC1.c1,2006,05 6:30:00,31 ,4.128154,165.3992,112.9949,52.40633
sgpcmbeC1.c1,2006,05 7:30:00,31 ,35.73541,378.4454,283.1725,108.6846
sgpcmbeC1.c1,2006,05 8:30:00,31 ,59.55843,574.5131,433.4587,162.6524
sgpcmbeC1.c1,2006,05 9:30:00,31 ,73.87218,751.9416,591.1904,216.0023
sgpcmbeC1.c1,2006,0510:30:00,31 ,143.4912, 890.205,706.5592, 247.123
sgpcmbeC1.c1,2006,0511:30:00,31 ,157.9913,973.1274,769.5834,253.4469
sgpcmbeC1.c1,2006,0512:30:00,31 ,155.3979,1004.988,756.8288,277.0522
sgpcmbeC1.c1,2006,0513:30:00,31 ,203.6497,944.7359,743.2086,239.2432
sgpcmbeC1.c1,2006,0514:30:00,31 ,206.0053,873.0159,684.2425,204.4231
sgpcmbeC1.c1,2006,0515:30:00,31 ,76.73244, 737.957,567.9404,182.8109
sgpcmbeC1.c1,2006,0516:30:00,31 ,61.69767, 563.719,433.0966,147.9813
sgpcmbeC1.c1,2006,0517:30:00,31 ,27.93139,377.3846,273.9447,97.78527
sgpcmbeC1.c1,2006,0518:30:00,31 ,13.04485,169.0888,97.75917,49.18615
sgpcmbeC1.c1,2006,0519:30:00,31 ,       0, 34.6315,8.950564,7.066713
sgpcmbeC1.c1,2006,0520:30:00,31 ,       0,0.384331,0.015636, 0.07076
sgpcmbeC1.c1,2006,0521:30:00,31 ,       0,0.102642,0.003311,0.018435
sgpcmbeC1.c1,2006,0522:30:00,31 ,       0,0.159364,0.005141,0.028623
sgpcmbeC1.c1,2006,0523:30:00,31 ,       0,       0,       0,       0