datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,05 0:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,05 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,05 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,05 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,05 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,05 5:30:00,29 ,       0,27.67674,13.36173,8.271741
sgpcmbeC1.c1,1999,05 6:30:00,29 ,0.953894,  67.951,35.30484,22.87786
sgpcmbeC1.c1,1999,05 7:30:00,29 ,12.31701,149.6271,53.13156,29.08201
sgpcmbeC1.c1,1999,05 8:30:00,29 ,7.757198,187.5045,70.21624,47.55398
sgpcmbeC1.c1,1999,05 9:30:00,29 ,15.03502,253.2552,100.9669,65.04063
sgpcmbeC1.c1,1999,0510:30:00,29 ,10.12579,309.0441,93.54414,71.41252
sgpcmbeC1.c1,1999,0511:30:00,29 ,15.07786,262.8672,98.02012,83.64893
sgpcmbeC1.c1,1999,0512:30:00,29 ,2.317991,320.6571,105.6329,101.5664
sgpcmbeC1.c1,1999,0513:30:00,29 ,13.42131,297.1164,113.5829,98.14659
sgpcmbeC1.c1,1999,0514:30:00,29 ,28.46423,  272.55,121.9759,76.97067
sgpcmbeC1.c1,1999,0515:30:00,29 , 21.6881,227.0628,111.0788, 60.6608
sgpcmbeC1.c1,1999,0516:30:00,29 ,11.21267, 212.711,90.06394,43.97845
sgpcmbeC1.c1,1999,0517:30:00,29 ,5.749328,99.05735,61.46166,21.83609
sgpcmbeC1.c1,1999,0518:30:00,29 ,7.423688,74.93989,49.72008,16.93679
sgpcmbeC1.c1,1999,0519:30:00,29 ,       0,24.95461,11.75226,6.423137
sgpcmbeC1.c1,1999,0520:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0521:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0522:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0523:30:00,28 ,       0,       0,       0,       0