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 ,       0,36.39313,14.01555,9.097011
sgpcmbeC1.c1,2006,05 6:30:00,31 ,3.709098,76.06349, 47.0813,21.15095
sgpcmbeC1.c1,2006,05 7:30:00,31 ,4.448348,136.9454, 63.0382, 30.3538
sgpcmbeC1.c1,2006,05 8:30:00,31 ,9.415964, 160.726,72.03205,39.18141
sgpcmbeC1.c1,2006,05 9:30:00,31 ,11.82868, 200.481,75.72392,51.30258
sgpcmbeC1.c1,2006,0510:30:00,31 ,27.05482,228.3502,79.20612,53.67569
sgpcmbeC1.c1,2006,0511:30:00,31 ,15.00605,296.0699,90.31032,76.84771
sgpcmbeC1.c1,2006,0512:30:00,31 ,3.568105, 323.109,112.5526,102.9392
sgpcmbeC1.c1,2006,0513:30:00,31 ,14.71971,318.8155,129.3754,98.67131
sgpcmbeC1.c1,2006,0514:30:00,31 ,24.02818,327.7046,129.8612,98.45161
sgpcmbeC1.c1,2006,0515:30:00,31 ,43.56795,277.8086,125.9615,72.19192
sgpcmbeC1.c1,2006,0516:30:00,31 ,19.42619,242.9211,88.39516,47.16448
sgpcmbeC1.c1,2006,0517:30:00,31 ,9.233948,154.9476, 67.1088, 31.2604
sgpcmbeC1.c1,2006,0518:30:00,31 , 4.43979,63.38099, 41.5629, 18.7996
sgpcmbeC1.c1,2006,0519:30:00,31 ,       0,29.34163,11.28537,6.654657
sgpcmbeC1.c1,2006,0520:30:00,31 ,       0,1.066568,0.051994,0.212214
sgpcmbeC1.c1,2006,0521:30:00,31 ,       0,0.557575,0.017986,0.100143
sgpcmbeC1.c1,2006,0522:30:00,31 ,       0,0.700726,0.022604,0.125854
sgpcmbeC1.c1,2006,0523:30:00,31 ,       0,       0,       0,       0