datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,08 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,08 1:30:00,29 ,       0,1.236489,0.042638, 0.22961
sgpcmbeC1.c1,2001,08 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,08 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,08 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,08 5:30:00,31 ,       0,2.857585,0.286672,0.589005
sgpcmbeC1.c1,2001,08 6:30:00,31 ,  0.2458,41.53043,20.09462,12.25552
sgpcmbeC1.c1,2001,08 7:30:00,30 ,  1.4762,88.50835,48.97704,23.00042
sgpcmbeC1.c1,2001,08 8:30:00,29 ,0.413591,152.3461,58.07615,32.06993
sgpcmbeC1.c1,2001,08 9:30:00,29 ,24.78974,191.3688,69.58187,40.24353
sgpcmbeC1.c1,2001,0810:30:00,29 ,15.27892,259.7577,74.45679,61.61749
sgpcmbeC1.c1,2001,0811:30:00,29 ,4.048653,298.1495,89.44287,97.98815
sgpcmbeC1.c1,2001,0812:30:00,29 ,4.994727,300.9417,111.1538,107.1499
sgpcmbeC1.c1,2001,0813:30:00,29 ,8.909998,318.1353,138.5126,98.33199
sgpcmbeC1.c1,2001,0814:30:00,29 ,28.36848,287.6076,125.2476,83.29637
sgpcmbeC1.c1,2001,0815:30:00,29 , 3.54352,250.1235,112.8443,73.84743
sgpcmbeC1.c1,2001,0816:30:00,29 ,       0,162.0959,79.40237,46.81216
sgpcmbeC1.c1,2001,0817:30:00,29 ,0.961765,104.7932,56.02123,25.83071
sgpcmbeC1.c1,2001,0818:30:00,31 ,       0,44.73224,21.73492,14.15499
sgpcmbeC1.c1,2001,0819:30:00,31 ,       0,8.028033,1.657236,1.738821
sgpcmbeC1.c1,2001,0820:30:00,31 ,       0,1.004757,0.082461,0.261058
sgpcmbeC1.c1,2001,0821:30:00,30 ,       0,0.392088, 0.01307,0.071585
sgpcmbeC1.c1,2001,0822:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0823:30:00,31 ,       0,       0,       0,       0