datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,04 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,04 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,04 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,04 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,04 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,04 5:30:00,30 ,       0,3.283414,0.673456,1.041782
sgpcmbeC1.c1,2001,04 6:30:00,30 ,2.917002,73.98222, 32.2145,17.51039
sgpcmbeC1.c1,2001,04 7:30:00,30 ,11.56741,165.0743,85.58334,39.62395
sgpcmbeC1.c1,2001,04 8:30:00,30 ,32.95375,260.9745,128.6779,72.32798
sgpcmbeC1.c1,2001,04 9:30:00,30 ,32.08955,379.9498,158.8347,92.78681
sgpcmbeC1.c1,2001,0410:30:00,30 ,47.32943,542.9613,198.3237,114.3718
sgpcmbeC1.c1,2001,0411:30:00,30 ,59.49835, 521.119,234.0426,126.8648
sgpcmbeC1.c1,2001,0412:30:00,30 ,62.36953, 579.746,255.1545,131.4259
sgpcmbeC1.c1,2001,0413:30:00,30 ,62.99357, 490.945, 267.157,124.8756
sgpcmbeC1.c1,2001,0414:30:00,30 ,63.09342,455.6087,242.3101,121.4033
sgpcmbeC1.c1,2001,0415:30:00,30 , 66.5806,329.7405,206.0883,88.05414
sgpcmbeC1.c1,2001,0416:30:00,30 ,61.82299,242.3298,157.0602,54.29307
sgpcmbeC1.c1,2001,0417:30:00,30 ,45.37838,155.8013,102.8768,28.36094
sgpcmbeC1.c1,2001,0418:30:00,30 ,10.75167,53.84198,33.57955,11.76756
sgpcmbeC1.c1,2001,0419:30:00,29 ,       0,2.637696,0.505984,0.714207
sgpcmbeC1.c1,2001,0420:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0421:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0422:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0423:30:00,30 ,       0,       0,       0,       0