datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,10 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,10 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,10 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,10 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,10 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,10 5:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,10 6:30:00,31 ,       0,5.271991,1.459315,1.606223
sgpcmbeC1.c1,2006,10 7:30:00,31 ,0.816689,45.34374,23.01891,14.15259
sgpcmbeC1.c1,2006,10 8:30:00,31 ,3.668957,92.48658,53.30734,29.32862
sgpcmbeC1.c1,2006,10 9:30:00,31 ,2.505488,130.3842,77.80095, 42.5945
sgpcmbeC1.c1,2006,1010:30:00,31 ,5.398274,157.7947,100.1632,48.24045
sgpcmbeC1.c1,2006,1011:30:00,31 ,7.783813,172.5912,110.7193, 55.4883
sgpcmbeC1.c1,2006,1012:30:00,31 ,7.453711,176.5232,117.7378,54.42337
sgpcmbeC1.c1,2006,1013:30:00,31 ,6.321438,172.7948,117.6094,  45.582
sgpcmbeC1.c1,2006,1014:30:00,31 ,13.97819, 151.333,101.5127,37.64629
sgpcmbeC1.c1,2006,1015:30:00,31 ,7.838761,117.8743,76.29005,30.35622
sgpcmbeC1.c1,2006,1016:30:00,31 ,2.459581,73.27938,41.75927,20.23614
sgpcmbeC1.c1,2006,1017:30:00,31 ,0.421251,29.10335,9.981195,8.055113
sgpcmbeC1.c1,2006,1018:30:00,29 ,       0,0.939237,0.054072,0.192214
sgpcmbeC1.c1,2006,1019:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,1020:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,1021:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,1022:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,1023:30:00,29 ,       0,       0,       0,       0