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 ,       0,4.070609,0.594165,0.922694
sgpcmbeC1.c1,2004,01 8:30:00,31 , 0.00002, 103.102,31.51507,33.42057
sgpcmbeC1.c1,2004,01 9:30:00,31 ,0.000294,273.1473,103.2889,101.0746
sgpcmbeC1.c1,2004,0110:30:00,31 ,0.012806, 421.045,170.2259,162.8573
sgpcmbeC1.c1,2004,0111:30:00,31 ,0.031548,519.5309,234.0638,199.8298
sgpcmbeC1.c1,2004,0112:30:00,31 ,0.003624,559.7185,267.7336,220.1626
sgpcmbeC1.c1,2004,0113:30:00,31 ,0.001255,528.5886,275.4333,210.6317
sgpcmbeC1.c1,2004,0114:30:00,31 , 0.05077, 468.394,235.1583,179.6469
sgpcmbeC1.c1,2004,0115:30:00,31 ,0.084602,337.8712,153.1948,127.4505
sgpcmbeC1.c1,2004,0116:30:00,31 , 0.00732,174.7498,66.18907,59.65829
sgpcmbeC1.c1,2004,0117:30:00,31 ,0.000015,28.30223,6.251754, 8.62509
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