datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,05 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 5:30:00,31 ,       0,7.705193,2.411048,2.715021
sgpcmbeC1.c1,2006,05 6:30:00,31 ,0.018811,118.1438,55.27613,41.94004
sgpcmbeC1.c1,2006,05 7:30:00,31 ,0.034473,306.6976,170.4505,111.8687
sgpcmbeC1.c1,2006,05 8:30:00,31 , 0.14357,501.2221,282.1063, 190.209
sgpcmbeC1.c1,2006,05 9:30:00,31 ,       0,670.1604,405.7809,236.2887
sgpcmbeC1.c1,2006,0510:30:00,31 ,0.227402,780.7844,484.0201,292.0066
sgpcmbeC1.c1,2006,0511:30:00,31 ,0.803604,864.5942,520.5741,321.7355
sgpcmbeC1.c1,2006,0512:30:00,31 ,0.158112,903.7639,500.2499,335.3996
sgpcmbeC1.c1,2006,0513:30:00,31 ,0.895828,829.8748,475.8445,301.3332
sgpcmbeC1.c1,2006,0514:30:00,31 ,0.484192,759.4042,442.8678,275.9842
sgpcmbeC1.c1,2006,0515:30:00,31 ,0.542679,651.3153,373.8315,217.5248
sgpcmbeC1.c1,2006,0516:30:00,31 ,0.042595,483.1709,284.4966,160.2776
sgpcmbeC1.c1,2006,0517:30:00,31 ,       0, 290.709,172.3418, 95.7527
sgpcmbeC1.c1,2006,0518:30:00,31 ,       0,103.8211,49.04568,37.51291
sgpcmbeC1.c1,2006,0519:30:00,31 ,       0,9.124113,1.977642,2.109982
sgpcmbeC1.c1,2006,0520:30:00,31 ,       0,0.384331,0.015636, 0.07076
sgpcmbeC1.c1,2006,0521:30:00,31 ,       0,0.102642,0.003311,0.018435
sgpcmbeC1.c1,2006,0522:30:00,31 ,       0,0.159364,0.005141,0.028623
sgpcmbeC1.c1,2006,0523:30:00,31 ,       0,       0,       0,       0