datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,05 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,05 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,05 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,05 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,05 4:30:00,31 ,       0, 0.16042,0.005175,0.028812
sgpcmbeC1.c1,2005,05 5:30:00,31 ,  0.1466,9.314412,3.723394,2.801551
sgpcmbeC1.c1,2005,05 6:30:00,31 ,1.396527,23.53487,10.20606,6.050161
sgpcmbeC1.c1,2005,05 7:30:00,31 ,2.006325,  30.809,13.64439,7.812525
sgpcmbeC1.c1,2005,05 8:30:00,31 ,2.066351,33.34545,12.80854,7.815725
sgpcmbeC1.c1,2005,05 9:30:00,31 ,2.228491,43.55743,16.12958, 12.4345
sgpcmbeC1.c1,2005,0510:30:00,31 ,1.440181,55.34913,18.39906,14.48943
sgpcmbeC1.c1,2005,0511:30:00,31 ,0.553397,50.32034, 19.0481,15.46776
sgpcmbeC1.c1,2005,0512:30:00,31 , 0.63499,57.84152,18.61824,17.11786
sgpcmbeC1.c1,2005,0513:30:00,31 ,1.373363,56.71815,17.81936,16.04859
sgpcmbeC1.c1,2005,0514:30:00,31 ,2.362916,59.59894,21.34802,18.81356
sgpcmbeC1.c1,2005,0515:30:00,30 ,4.501338,53.49135,18.80005,14.23386
sgpcmbeC1.c1,2005,0516:30:00,31 ,0.345113, 47.7635,16.69002,12.62823
sgpcmbeC1.c1,2005,0517:30:00,31 ,0.811583,37.65397,14.26683,7.866281
sgpcmbeC1.c1,2005,0518:30:00,31 ,0.534006,23.32406,11.60411, 5.17721
sgpcmbeC1.c1,2005,0519:30:00,31 ,0.094293,9.199706,3.206173,2.175517
sgpcmbeC1.c1,2005,0520:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0521:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0522:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0523:30:00,31 ,       0,       0,       0,       0