datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,10 0:30:00,25 ,       0,0.031603,0.001264,0.006321
sgpcmbeC1.c1,2005,10 1:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,10 2:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,10 3:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,10 4:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,10 5:30:00,22 ,       0,0.021995,   0.001,0.004689
sgpcmbeC1.c1,2005,10 6:30:00,31 ,       0, 4.09666,1.194355,1.219918
sgpcmbeC1.c1,2005,10 7:30:00,31 ,0.868722,41.38799,20.70759,13.17079
sgpcmbeC1.c1,2005,10 8:30:00,31 ,7.393003,89.28196,52.13098,29.07093
sgpcmbeC1.c1,2005,10 9:30:00,31 ,11.93663,129.2492,79.03595,40.64626
sgpcmbeC1.c1,2005,1010:30:00,31 ,21.91773,146.2375, 99.4757, 43.9973
sgpcmbeC1.c1,2005,1011:30:00,31 ,13.36019,156.4842,110.4556,48.95668
sgpcmbeC1.c1,2005,1012:30:00,31 ,21.18288,  158.15,112.0119,42.76671
sgpcmbeC1.c1,2005,1013:30:00,31 ,6.332499,155.6966,110.6887,38.08472
sgpcmbeC1.c1,2005,1014:30:00,31 ,4.831301,131.4312,96.79649,29.75214
sgpcmbeC1.c1,2005,1015:30:00,31 ,2.833817,103.6786,72.43286,27.30803
sgpcmbeC1.c1,2005,1016:30:00,31 ,2.217957,66.14201,43.11805,17.70751
sgpcmbeC1.c1,2005,1017:30:00,31 ,1.507634,21.55743, 9.71215,5.849175
sgpcmbeC1.c1,2005,1018:30:00,22 ,-0.06667, 0.16289,0.012656,0.042839
sgpcmbeC1.c1,2005,1019:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,1020:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,1021:30:00,24 ,       0,0.033379,0.001391,0.006813
sgpcmbeC1.c1,2005,1022:30:00,21 ,       0,0.001808,0.000086,0.000394
sgpcmbeC1.c1,2005,1023:30:00,22 ,       0,       0,       0,       0