datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,01 0:30:00,30 ,       0,0.201453,0.006715, 0.03678
sgpcmbeC1.c1,2004,01 1:30:00,28 ,       0,0.151895,0.005425,0.028705
sgpcmbeC1.c1,2004,01 2:30:00,28 ,       0,0.533719,0.022648,0.101941
sgpcmbeC1.c1,2004,01 3:30:00,25 ,       0,0.100687,0.004027,0.020137
sgpcmbeC1.c1,2004,01 4:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,01 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,01 6:30:00,30 ,       0, 0.25428,0.010147,0.047008
sgpcmbeC1.c1,2004,01 7:30:00,31 ,       0,9.246639,2.729139,2.501497
sgpcmbeC1.c1,2004,01 8:30:00,31 ,4.055222,136.1724,68.03039, 41.8738
sgpcmbeC1.c1,2004,01 9:30:00,31 ,21.72689,328.1709,180.3569,105.6341
sgpcmbeC1.c1,2004,0110:30:00,31 , 40.5219,488.4242, 281.462,151.5682
sgpcmbeC1.c1,2004,0111:30:00,31 ,33.07064,594.1893,362.8539,186.6771
sgpcmbeC1.c1,2004,0112:30:00,31 , 36.9195,639.3018,403.1164,203.3643
sgpcmbeC1.c1,2004,0113:30:00,31 ,49.67066,613.5368,397.1315,191.9611
sgpcmbeC1.c1,2004,0114:30:00,31 , 61.1014,540.0253,343.9184,158.7466
sgpcmbeC1.c1,2004,0115:30:00,31 , 24.4362,397.8722,239.5786, 113.524
sgpcmbeC1.c1,2004,0116:30:00,31 ,15.30228,217.8565,116.5477,59.10871
sgpcmbeC1.c1,2004,0117:30:00,31 ,1.747224,41.39443,13.98294,11.88705
sgpcmbeC1.c1,2004,0118:30:00,31 ,       0,1.759613, 0.05847,0.315862
sgpcmbeC1.c1,2004,0119:30:00,31 ,       0,0.320371,0.022013, 0.07262
sgpcmbeC1.c1,2004,0120:30:00,30 ,       0,0.321596, 0.01072,0.058715
sgpcmbeC1.c1,2004,0121:30:00,29 ,       0,0.316154,0.016756,0.061743
sgpcmbeC1.c1,2004,0122:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0123:30:00,29 ,       0,       0,       0,       0