datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,06 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,06 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,06 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,06 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,06 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,06 5:30:00,30 ,1.328286,34.98704,14.62021,7.692954
sgpcmbeC1.c1,2003,06 6:30:00,30 ,6.525393,41.76867,20.15857,10.36782
sgpcmbeC1.c1,2003,06 7:30:00,30 ,3.117399,87.38853, 28.9672,21.39156
sgpcmbeC1.c1,2003,06 8:30:00,30 ,1.585124,95.01491,32.52826,26.98926
sgpcmbeC1.c1,2003,06 9:30:00,30 ,1.774178,106.5826,40.52177,30.18676
sgpcmbeC1.c1,2003,0610:30:00,30 ,0.455368,175.5052,41.82503,38.44204
sgpcmbeC1.c1,2003,0611:30:00,30 , 1.29703,114.9314,47.84084,32.32542
sgpcmbeC1.c1,2003,0612:30:00,30 ,1.170521,167.7045,46.43659, 41.7934
sgpcmbeC1.c1,2003,0613:30:00,30 ,0.748153, 232.213,51.20806,47.77089
sgpcmbeC1.c1,2003,0614:30:00,30 , 2.01345,153.4534,42.89314,37.55238
sgpcmbeC1.c1,2003,0615:30:00,30 ,1.439809,144.2191,48.62422,42.33545
sgpcmbeC1.c1,2003,0616:30:00,30 ,1.049609,76.30646,26.98129,21.40806
sgpcmbeC1.c1,2003,0617:30:00,30 ,3.721773,147.9288,27.73561, 30.6012
sgpcmbeC1.c1,2003,0618:30:00,30 ,0.896458,53.34949,19.80717,   12.94
sgpcmbeC1.c1,2003,0619:30:00,30 , 1.17765,26.23926,13.08604,5.587406
sgpcmbeC1.c1,2003,0620:30:00,30 ,       0, 8.99808,0.299936,1.642817
sgpcmbeC1.c1,2003,0621:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0622:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0623:30:00,30 ,       0,       0,       0,       0