datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,04 0:30:00,30 ,       0,1.504236,0.050141,0.274635
sgpcmbeC1.c1,2001,04 1:30:00,29 ,       0,1.551123,0.068775,0.296731
sgpcmbeC1.c1,2001,04 2:30:00,30 ,       0,1.201446,0.040048,0.219353
sgpcmbeC1.c1,2001,04 3:30:00,30 ,       0,0.680383,0.022679, 0.12422
sgpcmbeC1.c1,2001,04 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,04 5:30:00,30 ,       0,6.894273,1.585841,2.231782
sgpcmbeC1.c1,2001,04 6:30:00,30 ,2.917866,52.62816,  31.577,16.13257
sgpcmbeC1.c1,2001,04 7:30:00,30 ,6.774506,97.27644,52.42995,25.56746
sgpcmbeC1.c1,2001,04 8:30:00,30 ,8.498524,153.1404,59.01382,33.75033
sgpcmbeC1.c1,2001,04 9:30:00,30 , 6.61844,138.9102,59.68549,36.94205
sgpcmbeC1.c1,2001,0410:30:00,30 ,24.64448,200.0346,65.55315,47.55485
sgpcmbeC1.c1,2001,0411:30:00,30 ,14.28375,266.3233, 76.1404,70.01211
sgpcmbeC1.c1,2001,0412:30:00,30 , 2.15179,247.5056,84.50297,78.23674
sgpcmbeC1.c1,2001,0413:30:00,30 ,16.51132,294.9914,104.6817,85.62707
sgpcmbeC1.c1,2001,0414:30:00,30 ,33.45548,316.0896,109.2821,74.13407
sgpcmbeC1.c1,2001,0415:30:00,30 ,20.31777,244.2849,96.31102,58.77498
sgpcmbeC1.c1,2001,0416:30:00,30 ,15.50455,154.1164, 70.8351,33.82815
sgpcmbeC1.c1,2001,0417:30:00,30 ,5.668622,92.86607,57.74925,20.60641
sgpcmbeC1.c1,2001,0418:30:00,30 ,8.385653,64.61423,36.25595,14.38572
sgpcmbeC1.c1,2001,0419:30:00,29 ,       0,5.945595,1.392768,1.557019
sgpcmbeC1.c1,2001,0420:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0421:30:00,29 ,       0,1.015026,0.035001,0.188486
sgpcmbeC1.c1,2001,0422:30:00,30 ,       0,1.545917,0.051531,0.282245
sgpcmbeC1.c1,2001,0423:30:00,30 ,       0,1.429417,0.047647,0.260975