datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,05 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 5:30:00,30 ,0.835698,27.25785,13.51175,7.556408
sgpcmbeC1.c1,2002,05 6:30:00,31 ,2.636962,73.19849,39.10482,18.96321
sgpcmbeC1.c1,2002,05 7:30:00,31 ,11.78303, 134.871,62.21751,27.92126
sgpcmbeC1.c1,2002,05 8:30:00,31 ,11.35079,191.5698,74.86593, 44.0435
sgpcmbeC1.c1,2002,05 9:30:00,31 ,13.73745, 226.832,102.1422,65.82637
sgpcmbeC1.c1,2002,0510:30:00,31 ,19.53849,243.8112,96.79851,70.30436
sgpcmbeC1.c1,2002,0511:30:00,31 ,16.78583,352.1952, 90.6312, 74.0159
sgpcmbeC1.c1,2002,0512:30:00,31 ,3.019011,275.2361,93.92535,87.87419
sgpcmbeC1.c1,2002,0513:30:00,31 ,16.51148,289.1941,86.23532,78.62378
sgpcmbeC1.c1,2002,0514:30:00,31 ,7.434664,278.6363, 96.7889, 72.7569
sgpcmbeC1.c1,2002,0515:30:00,31 ,6.056902,223.4421,92.18733,61.49958
sgpcmbeC1.c1,2002,0516:30:00,31 ,8.494286, 142.886,68.97826,30.08446
sgpcmbeC1.c1,2002,0517:30:00,31 , 8.41509, 118.545,62.84532,25.91236
sgpcmbeC1.c1,2002,0518:30:00,31 ,2.116054,70.80342,43.58519,20.70743
sgpcmbeC1.c1,2002,0519:30:00,31 ,       0,23.09316,9.953979,6.188893
sgpcmbeC1.c1,2002,0520:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0521:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0522:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0523:30:00,30 ,       0,       0,       0,       0