datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,09 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 6:30:00,30 ,0.006348,28.17017,11.51533, 7.37713
sgpcmbeC1.c1,2002,09 7:30:00,30 ,0.080275,73.39426,45.28859,17.06567
sgpcmbeC1.c1,2002,09 8:30:00,30 ,0.194615,102.9796,60.32946,22.96391
sgpcmbeC1.c1,2002,09 9:30:00,30 ,0.548059,169.1747,  65.093,42.31661
sgpcmbeC1.c1,2002,0910:30:00,30 ,3.046374,225.2745,63.06652,58.87071
sgpcmbeC1.c1,2002,0911:30:00,30 ,7.343775,328.5554,85.23323,92.95474
sgpcmbeC1.c1,2002,0912:30:00,30 ,3.291525,255.1211, 101.417,94.47597
sgpcmbeC1.c1,2002,0913:30:00,30 ,0.663835, 281.304,98.04092,92.71792
sgpcmbeC1.c1,2002,0914:30:00,30 ,0.523214,241.9969,92.04566,71.30344
sgpcmbeC1.c1,2002,0915:30:00,30 ,       0,192.7725,71.40024,44.81439
sgpcmbeC1.c1,2002,0916:30:00,30 ,0.286038,131.2444,56.89546,30.46393
sgpcmbeC1.c1,2002,0917:30:00,30 ,       0,54.77201, 37.2833,16.09782
sgpcmbeC1.c1,2002,0918:30:00,30 ,       0,20.62429,6.244806,5.628429
sgpcmbeC1.c1,2002,0919:30:00,29 ,       0,0.790997,0.027276,0.146884
sgpcmbeC1.c1,2002,0920:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0921:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0922:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0923:30:00,27 ,       0,       0,       0,       0