datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,03 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,03 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,03 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,03 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,03 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,03 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,03 6:30:00,31 ,       0,13.40168,4.555803,3.933648
sgpcmbeC1.c1,2004,03 7:30:00,31 ,       0,34.01216, 13.7942,7.542423
sgpcmbeC1.c1,2004,03 8:30:00,31 , 1.66681,55.58923, 15.9391,15.87557
sgpcmbeC1.c1,2004,03 9:30:00,31 ,1.286873,102.7753,20.90088,26.14856
sgpcmbeC1.c1,2004,0310:30:00,31 ,0.441782,126.5215,27.74616,33.37272
sgpcmbeC1.c1,2004,0311:30:00,31 ,0.476936,156.1446, 30.4962,38.99918
sgpcmbeC1.c1,2004,0312:30:00,31 ,0.602106,181.9211,36.70398,50.54361
sgpcmbeC1.c1,2004,0313:30:00,31 ,0.466543,138.2026,30.34451,40.72981
sgpcmbeC1.c1,2004,0314:30:00,31 ,1.194311,113.3699,31.48455,34.25449
sgpcmbeC1.c1,2004,0315:30:00,31 ,1.564678,99.19798,26.78619,28.69659
sgpcmbeC1.c1,2004,0316:30:00,31 ,2.784647,66.00706,22.52798,20.03358
sgpcmbeC1.c1,2004,0317:30:00,31 ,5.256892,45.84612,18.10762,11.43976
sgpcmbeC1.c1,2004,0318:30:00,31 ,       0,19.08764,9.993857,4.220806
sgpcmbeC1.c1,2004,0319:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0320:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0321:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0322:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0323:30:00,29 ,       0,       0,       0,       0