datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,05 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 5:30:00,30 , 0.83433,20.97998, 10.6595,5.320577
sgpcmbeC1.c1,2002,05 6:30:00,31 ,2.638572,40.37729,20.69263,10.35138
sgpcmbeC1.c1,2002,05 7:30:00,31 ,4.879281, 81.5302, 28.3018,19.79896
sgpcmbeC1.c1,2002,05 8:30:00,31 ,1.630807,98.85525,39.17146,26.78013
sgpcmbeC1.c1,2002,05 9:30:00,31 ,0.788482,80.33926,40.33357, 24.0238
sgpcmbeC1.c1,2002,0510:30:00,31 , 0.77999,129.2546,50.12476,37.49791
sgpcmbeC1.c1,2002,0511:30:00,31 ,0.895802,173.0363, 53.9906,47.08396
sgpcmbeC1.c1,2002,0512:30:00,31 ,0.527922, 198.422,49.02353,48.96183
sgpcmbeC1.c1,2002,0513:30:00,31 ,0.404729, 99.4849,39.12104,28.99879
sgpcmbeC1.c1,2002,0514:30:00,31 ,1.224424,118.5325,38.73729, 34.8518
sgpcmbeC1.c1,2002,0515:30:00,31 ,0.936102,164.7367,38.13075,39.29224
sgpcmbeC1.c1,2002,0516:30:00,31 ,2.333647, 86.3285, 26.0712,21.71646
sgpcmbeC1.c1,2002,0517:30:00,31 ,4.162572,69.12038, 23.0932,18.21079
sgpcmbeC1.c1,2002,0518:30:00,31 ,2.116054,54.38528,20.15395,13.22192
sgpcmbeC1.c1,2002,0519:30:00,31 ,       0,14.69793,7.954625,4.218957
sgpcmbeC1.c1,2002,0520:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0521:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0522:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0523:30:00,30 ,       0,       0,       0,       0