datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,09 0:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,09 1:30:00,28 ,       0,0.061537,0.002198,0.011629
sgpcmbeC1.c1,2006,09 2:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,09 3:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,09 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,09 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,09 6:30:00,30 ,0.117291,49.73769, 24.8772,11.78641
sgpcmbeC1.c1,2006,09 7:30:00,30 ,6.390191,232.7293,147.8977,68.38606
sgpcmbeC1.c1,2006,09 8:30:00,30 ,19.85922,441.9505,312.6132,136.5871
sgpcmbeC1.c1,2006,09 9:30:00,30 ,42.16735,629.4285,488.7641,174.0777
sgpcmbeC1.c1,2006,0910:30:00,30 ,113.8819, 773.347,630.5002,203.4865
sgpcmbeC1.c1,2006,0911:30:00,30 ,143.4633, 858.798,706.4307,187.0765
sgpcmbeC1.c1,2006,0912:30:00,30 ,193.6197,899.8265,726.5869,191.0315
sgpcmbeC1.c1,2006,0913:30:00,30 , 233.778,840.7244, 688.915,175.5677
sgpcmbeC1.c1,2006,0914:30:00,30 ,160.6269,737.9406,582.1175,157.0603
sgpcmbeC1.c1,2006,0915:30:00,30 ,121.2189,622.3314,460.0634,140.6253
sgpcmbeC1.c1,2006,0916:30:00,30 ,130.2581,389.8098,289.7894,69.60161
sgpcmbeC1.c1,2006,0917:30:00,30 ,57.14252,195.7561,128.8708,41.50311
sgpcmbeC1.c1,2006,0918:30:00,30 ,1.527324,50.53405,16.63315,11.85826
sgpcmbeC1.c1,2006,0919:30:00,28 ,       0, 0.15432,0.005511,0.029164
sgpcmbeC1.c1,2006,0920:30:00,28 ,       0,0.101422,0.003622,0.019167
sgpcmbeC1.c1,2006,0921:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0922:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0923:30:00,29 ,       0,       0,       0,       0