datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,09 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 6:30:00,30 , 2.19781,51.69946,27.45739,13.38816
sgpcmbeC1.c1,2002,09 7:30:00,30 ,19.11679,222.7031,173.7591,48.73906
sgpcmbeC1.c1,2002,09 8:30:00,30 ,53.50252,422.5046,356.9917,96.66008
sgpcmbeC1.c1,2002,09 9:30:00,30 ,118.8751,624.3184,529.7312,124.0886
sgpcmbeC1.c1,2002,0910:30:00,30 ,242.4488, 767.165,679.8661,130.5389
sgpcmbeC1.c1,2002,0911:30:00,30 , 383.667,848.6184,769.2247,109.6123
sgpcmbeC1.c1,2002,0912:30:00,30 ,273.6528, 871.886,773.9161,136.0435
sgpcmbeC1.c1,2002,0913:30:00,30 ,114.6253,844.5211,718.6226,169.9026
sgpcmbeC1.c1,2002,0914:30:00,30 ,142.1758,741.6085,631.0343,149.4059
sgpcmbeC1.c1,2002,0915:30:00,30 ,69.10697,604.7009,485.6552, 132.878
sgpcmbeC1.c1,2002,0916:30:00,30 , 11.5306,411.4852,303.1449,95.57566
sgpcmbeC1.c1,2002,0917:30:00,30 ,2.860753,207.5938,133.4494,54.35467
sgpcmbeC1.c1,2002,0918:30:00,30 ,       0,40.95641,15.96069, 12.2413
sgpcmbeC1.c1,2002,0919:30:00,29 ,       0,0.102979,0.005286,0.020982
sgpcmbeC1.c1,2002,0920:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0921:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0922:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0923:30:00,27 ,       0,       0,       0,       0