datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,01 0:30:00,21 ,       0,0.314285,0.014966,0.068583
sgpcmbeC1.c1,2007,01 1:30:00,20 ,       0,0.280486,0.014024,0.062719
sgpcmbeC1.c1,2007,01 2:30:00,17 ,       0,0.462825,0.027225,0.112252
sgpcmbeC1.c1,2007,01 3:30:00,18 ,       0,0.799933,0.044441,0.188546
sgpcmbeC1.c1,2007,01 4:30:00,15 ,       0, 1.26887,0.084591,0.327621
sgpcmbeC1.c1,2007,01 5:30:00,16 ,       0,0.499612,0.031226,0.124903
sgpcmbeC1.c1,2007,01 6:30:00,22 ,       0,0.259336,0.011788,0.055291
sgpcmbeC1.c1,2007,01 7:30:00,31 ,       0,6.426022,1.611531, 1.58014
sgpcmbeC1.c1,2007,01 8:30:00,30 ,0.540969, 82.8848,28.65641,20.57241
sgpcmbeC1.c1,2007,01 9:30:00,31 ,1.596926,267.3901, 72.9302,58.68438
sgpcmbeC1.c1,2007,0110:30:00,31 ,4.322751,303.7085,109.0964,84.06893
sgpcmbeC1.c1,2007,0111:30:00,31 ,8.547894,346.0969,133.2536,95.23535
sgpcmbeC1.c1,2007,0112:30:00,31 ,11.23917,372.1284, 146.091,107.2382
sgpcmbeC1.c1,2007,0113:30:00,31 ,11.88352,358.0897,139.1694,88.81866
sgpcmbeC1.c1,2007,0114:30:00,31 ,15.75328,303.5912,119.3864,68.97463
sgpcmbeC1.c1,2007,0115:30:00,31 ,8.139668,218.7318,80.44814,50.39495
sgpcmbeC1.c1,2007,0116:30:00,31 ,2.557447,122.6956,40.85052,27.40255
sgpcmbeC1.c1,2007,0117:30:00,31 ,       0,25.70853, 6.79034,6.402431
sgpcmbeC1.c1,2007,0118:30:00,27 ,       0,0.361537, 0.01339,0.069578
sgpcmbeC1.c1,2007,0119:30:00,26 ,       0,0.786773, 0.03026,0.154299
sgpcmbeC1.c1,2007,0120:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0121:30:00,22 ,       0,0.774404,  0.0352,0.165103
sgpcmbeC1.c1,2007,0122:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0123:30:00,20 ,       0,       0,       0,       0