datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,02 0:30:00,28 ,0.002386,  1215.7,111.9531,268.3587
sgpcmbeC1.c1,2007,02 1:30:00,28 ,       0,1763.593,109.9813,339.2763
sgpcmbeC1.c1,2007,02 2:30:00,28 ,       0,885.3337,82.98158,187.6375
sgpcmbeC1.c1,2007,02 3:30:00,28 ,       0,771.3345,73.37978,163.4515
sgpcmbeC1.c1,2007,02 4:30:00,28 ,       0, 582.346,  60.311,130.1329
sgpcmbeC1.c1,2007,02 5:30:00,28 ,       0,701.5306,55.63108,142.0674
sgpcmbeC1.c1,2007,02 6:30:00,28 ,       0,1144.213,66.68046,218.1397
sgpcmbeC1.c1,2007,02 7:30:00,28 ,       0,338.0681,40.98551,81.46038
sgpcmbeC1.c1,2007,02 8:30:00,28 ,       0,254.6381,47.74126, 84.4876
sgpcmbeC1.c1,2007,02 9:30:00,28 ,       0,278.7888,43.77579,84.47527
sgpcmbeC1.c1,2007,0210:30:00,28 ,       0,474.6737,44.33311,102.8348
sgpcmbeC1.c1,2007,0211:30:00,28 ,       0,586.3151,43.98291, 118.091
sgpcmbeC1.c1,2007,0212:30:00,28 ,0.000136,200.0567,29.02636,58.66506
sgpcmbeC1.c1,2007,0213:30:00,28 , 0.00509,515.2714, 39.8445,104.1824
sgpcmbeC1.c1,2007,0214:30:00,28 ,0.009611,1403.617,75.80687, 265.832
sgpcmbeC1.c1,2007,0215:30:00,28 ,0.012265,510.2737, 44.2943,106.1715
sgpcmbeC1.c1,2007,0216:30:00,28 ,       0, 380.471,46.31961,90.14968
sgpcmbeC1.c1,2007,0217:30:00,28 ,0.070429,480.4224,60.89187,119.1197
sgpcmbeC1.c1,2007,0218:30:00,28 ,0.121579,458.9394,60.39739,110.1518
sgpcmbeC1.c1,2007,0219:30:00,28 ,0.057359,496.7156,60.67731,118.1623
sgpcmbeC1.c1,2007,0220:30:00,28 , 0.00665,588.7532,65.59472,139.0642
sgpcmbeC1.c1,2007,0221:30:00,28 ,       0,535.4699,54.99215,119.6822
sgpcmbeC1.c1,2007,0222:30:00,28 ,0.001079,562.4794,58.29637, 129.974
sgpcmbeC1.c1,2007,0223:30:00,28 ,0.002424,703.7438,91.34722,195.7087