datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,09 0:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,09 1:30:00,27 ,       0,0.436176,0.016155,0.083942
sgpcmbeC1.c1,1998,09 2:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,09 3:30:00,27 ,       0,0.708043,0.026224,0.136263
sgpcmbeC1.c1,1998,09 4:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,09 5:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,09 6:30:00,28 ,2.098539,36.96363,22.77319, 9.82187
sgpcmbeC1.c1,1998,09 7:30:00,28 ,17.12745,92.13157,55.12474,16.59395
sgpcmbeC1.c1,1998,09 8:30:00,28 ,8.465117,158.3206,59.36278,29.52045
sgpcmbeC1.c1,1998,09 9:30:00,28 ,10.85373,217.2009,62.58785,40.03516
sgpcmbeC1.c1,1998,0910:30:00,28 ,26.69278,240.3543,74.75997,61.03105
sgpcmbeC1.c1,1998,0911:30:00,28 ,13.54783,299.7093,93.74127,90.27342
sgpcmbeC1.c1,1998,0912:30:00,28 , 3.31748,301.7811, 105.587,100.5292
sgpcmbeC1.c1,1998,0913:30:00,28 ,16.97119,310.6479, 125.094,112.8006
sgpcmbeC1.c1,1998,0914:30:00,28 ,30.93909,331.6311,128.3329,94.02835
sgpcmbeC1.c1,1998,0915:30:00,28 ,14.91857,232.0154,93.63303,66.47537
sgpcmbeC1.c1,1998,0916:30:00,28 ,14.83752, 160.659,76.17943,35.56524
sgpcmbeC1.c1,1998,0917:30:00,28 , 14.6307,98.55191,53.36545,21.82011
sgpcmbeC1.c1,1998,0918:30:00,28 ,       0,36.97246,16.52979,11.02534
sgpcmbeC1.c1,1998,0919:30:00,28 ,       0, 1.05014,0.037505,0.198458
sgpcmbeC1.c1,1998,0920:30:00,27 ,       0,0.586109,0.021708,0.112797
sgpcmbeC1.c1,1998,0921:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0922:30:00,27 ,       0,0.846808,0.031363,0.162968
sgpcmbeC1.c1,1998,0923:30:00,26 ,       0,       0,       0,       0