datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,09 0:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,09 1:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,09 2:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,09 3:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,09 4:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,09 5:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,09 6:30:00,30 ,8.974908,35.71582, 18.6005,7.287068
sgpcmbeC1.c1,2005,09 7:30:00,30 ,24.48227,  148.88,77.08947,26.19066
sgpcmbeC1.c1,2005,09 8:30:00,30 ,70.27639,252.5523,138.7845,47.59867
sgpcmbeC1.c1,2005,09 9:30:00,29 ,74.02431,322.5148,186.0775,70.89535
sgpcmbeC1.c1,2005,0910:30:00,30 ,75.23094,395.1399,209.3987,92.70396
sgpcmbeC1.c1,2005,0911:30:00,30 ,73.39738,480.5052,217.8602,108.4472
sgpcmbeC1.c1,2005,0912:30:00,30 ,71.33202, 520.404,210.1514,107.6192
sgpcmbeC1.c1,2005,0913:30:00,30 ,70.60283,409.7169,195.9187,93.65676
sgpcmbeC1.c1,2005,0914:30:00,30 ,  68.023,436.5077,178.4269, 86.3025
sgpcmbeC1.c1,2005,0915:30:00,30 ,62.91643,266.9916,  145.83,52.67085
sgpcmbeC1.c1,2005,0916:30:00,30 ,51.82467,189.4399,108.8064,37.08386
sgpcmbeC1.c1,2005,0917:30:00,30 , 20.8329,98.06944,60.77323,20.47629
sgpcmbeC1.c1,2005,0918:30:00,30 ,1.008206,24.66314,10.93572,7.313009
sgpcmbeC1.c1,2005,0919:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0920:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0921:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0922:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0923:30:00,26 ,       0,       0,       0,       0