datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,01 0:30:00,26 ,       0,0.626539,0.072406,0.147991
sgpcmbeC1.c1,1998,01 1:30:00,28 ,       0,0.133135,0.012651,0.034138
sgpcmbeC1.c1,1998,01 2:30:00,26 ,       0,0.427335,0.044877,0.113289
sgpcmbeC1.c1,1998,01 3:30:00,28 ,       0,0.405409,0.027563,0.081762
sgpcmbeC1.c1,1998,01 4:30:00,29 ,       0,0.297614,0.047645,0.093444
sgpcmbeC1.c1,1998,01 5:30:00,29 ,       0,0.525464,0.057855,0.142283
sgpcmbeC1.c1,1998,01 6:30:00,29 ,       0,0.431393,0.074706,0.119481
sgpcmbeC1.c1,1998,01 7:30:00,29 ,0.143282,4.367205, 0.99287,1.087344
sgpcmbeC1.c1,1998,01 8:30:00,29 ,0.031918,99.34506,25.68184,35.32338
sgpcmbeC1.c1,1998,01 9:30:00,29 ,0.064396, 262.607, 87.2341,104.1499
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 ,0.292679,28.12881, 7.26002,9.932432
sgpcmbeC1.c1,1998,0118:30:00,28 ,       0,0.990246,0.266359, 0.31559
sgpcmbeC1.c1,1998,0119:30:00,28 ,       0,0.797693,0.122976, 0.18149
sgpcmbeC1.c1,1998,0120:30:00,28 ,       0,0.582048,0.061895,0.133884
sgpcmbeC1.c1,1998,0121:30:00,27 ,       0,0.185945,0.039692,0.062101
sgpcmbeC1.c1,1998,0122:30:00,27 ,       0, 0.66155,0.063265,0.146922
sgpcmbeC1.c1,1998,0123:30:00,27 ,       0, 0.62152,0.058016,0.158988