datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,09 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,09 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,09 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,09 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,09 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,09 5:30:00,30 ,       0, 0.01903,0.000634,0.003474
sgpcmbeC1.c1,2004,09 6:30:00,30 ,0.577887, 21.4467,10.84014,5.565488
sgpcmbeC1.c1,2004,09 7:30:00,30 ,5.694964,62.06062,47.98887,14.25664
sgpcmbeC1.c1,2004,09 8:30:00,30 ,14.55192,108.8691,92.97252,21.71164
sgpcmbeC1.c1,2004,09 9:30:00,30 , 68.5175,140.1258,125.7154,17.62076
sgpcmbeC1.c1,2004,0910:30:00,30 ,89.41744,170.5087,150.6485,18.55439
sgpcmbeC1.c1,2004,0911:30:00,30 ,76.64323,185.0543,160.5523, 20.3973
sgpcmbeC1.c1,2004,0912:30:00,30 , 102.242,189.3032,163.5166,19.41939
sgpcmbeC1.c1,2004,0913:30:00,30 ,72.78972,176.9684,146.1945,29.33546
sgpcmbeC1.c1,2004,0914:30:00,30 ,21.04415,180.6447,129.0187,35.75954
sgpcmbeC1.c1,2004,0915:30:00,30 ,21.43598,  139.86,104.5814,28.98238
sgpcmbeC1.c1,2004,0916:30:00,30 ,16.56182,106.5654,75.93469,21.89012
sgpcmbeC1.c1,2004,0917:30:00,30 , 12.3912,55.20891,36.63193,13.26344
sgpcmbeC1.c1,2004,0918:30:00,30 ,       0, 16.5734,5.890251,5.499659
sgpcmbeC1.c1,2004,0919:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0920:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0921:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0922:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0923:30:00,30 ,       0,       0,       0,       0