datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,09 0:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,09 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,09 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,09 3:30:00,28 ,       0,0.259187,0.015507,0.056565
sgpcmbeC1.c1,1997,09 4:30:00,28 ,       0, 0.22135,0.014163,0.046881
sgpcmbeC1.c1,1997,09 5:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,09 6:30:00,28 ,       0,27.25189,7.107606,8.292202
sgpcmbeC1.c1,1997,09 7:30:00,29 ,       0,78.01832,31.27726, 27.1399
sgpcmbeC1.c1,1997,09 8:30:00,28 ,       0,123.0397,48.27302,35.63719
sgpcmbeC1.c1,1997,09 9:30:00,28 ,       0,154.8365,56.49322,51.24851
sgpcmbeC1.c1,1997,0910:30:00,28 ,0.032681,233.8877,83.38287,84.22795
sgpcmbeC1.c1,1997,0911:30:00,28 ,0.543592,246.0588,63.70361,79.80756
sgpcmbeC1.c1,1997,0912:30:00,28 ,0.366448,262.2424, 55.2944,80.97838
sgpcmbeC1.c1,1997,0913:30:00,28 ,0.415778, 268.125, 70.7975,84.08128
sgpcmbeC1.c1,1997,0914:30:00,28 ,0.087158,225.5934,61.16506,63.90486
sgpcmbeC1.c1,1997,0915:30:00,27 ,       0,216.8976, 78.2305,61.92361
sgpcmbeC1.c1,1997,0916:30:00,27 ,       0, 107.438,44.35422, 29.4212
sgpcmbeC1.c1,1997,0917:30:00,27 ,       0,54.74059,28.97839,20.75405
sgpcmbeC1.c1,1997,0918:30:00,27 ,       0, 22.9505,5.992412,7.156801
sgpcmbeC1.c1,1997,0919:30:00,27 ,       0,0.387639,0.015445,0.074539
sgpcmbeC1.c1,1997,0920:30:00,27 ,       0, 0.07587, 0.00281,0.014601
sgpcmbeC1.c1,1997,0921:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,0922:30:00,27 ,       0,0.114024,0.004223,0.021944
sgpcmbeC1.c1,1997,0923:30:00,27 ,       0,       0,       0,       0