datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,01 0:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 2:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 3:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 6:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 7:30:00,29 ,       0,4.034276,0.538526,1.101653
sgpcmbeC1.c1,1998,01 8:30:00,29 ,0.031918,99.34506,25.62251,35.36721
sgpcmbeC1.c1,1998,01 9:30:00,29 ,0.064396, 262.607,87.23246,104.1514
sgpcmbeC1.c1,1998,0110:30:00,29 ,0.044306,405.9751,139.7407,170.5794
sgpcmbeC1.c1,1998,0111:30:00,29 ,0.056917,510.4247,179.9981,209.7721
sgpcmbeC1.c1,1998,0112:30:00,29 ,0.254608,555.9661,212.9158,232.8809
sgpcmbeC1.c1,1998,0113:30:00,29 ,0.305428,537.6761,188.8549,213.0649
sgpcmbeC1.c1,1998,0114:30:00,29 ,0.252434,462.7218,151.0181,178.6753
sgpcmbeC1.c1,1998,0115:30:00,29 ,0.097755, 336.511,108.5142,125.6146
sgpcmbeC1.c1,1998,0116:30:00,29 ,0.048689,176.1343,56.03771,65.85662
sgpcmbeC1.c1,1998,0117:30:00,29 ,0.000152,28.03856,6.921987,10.08588
sgpcmbeC1.c1,1998,0118:30:00,28 ,       0,0.278683,0.009953,0.052666
sgpcmbeC1.c1,1998,0119:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0120:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0121:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0122:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0123:30:00,27 ,       0,       0,       0,       0