datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,07 0:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,07 1:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,07 2:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,07 3:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,07 4:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,07 5:30:00,20 ,0.003307,0.998032,0.410326,0.434255
sgpcmbeC1.c1,2004,07 6:30:00,31 ,0.004811,0.999983,0.552724,0.438774
sgpcmbeC1.c1,2004,07 7:30:00,31 ,0.002926,       1,0.563437,0.450201
sgpcmbeC1.c1,2004,07 8:30:00,31 ,0.002974,       1,0.545084,0.452127
sgpcmbeC1.c1,2004,07 9:30:00,31 ,0.001474,       1,0.558885,0.441175
sgpcmbeC1.c1,2004,0710:30:00,31 ,0.001372,       1, 0.48742,0.439023
sgpcmbeC1.c1,2004,0711:30:00,31 ,0.002015,       1,0.508529,0.431734
sgpcmbeC1.c1,2004,0712:30:00,31 ,0.004912,       1,0.453488,0.428526
sgpcmbeC1.c1,2004,0713:30:00,31 ,0.003168,       1,0.455708,0.421809
sgpcmbeC1.c1,2004,0714:30:00,31 ,0.002011, 0.99989,0.445052,0.392755
sgpcmbeC1.c1,2004,0715:30:00,31 ,0.003498,0.998984,0.420403,0.374796
sgpcmbeC1.c1,2004,0716:30:00,31 ,0.006162,0.993212, 0.36453,0.396905
sgpcmbeC1.c1,2004,0717:30:00,31 ,0.006143,0.989435,0.311514,0.358448
sgpcmbeC1.c1,2004,0718:30:00,31 ,0.008423,0.992154,0.307973, 0.40019
sgpcmbeC1.c1,2004,0719:30:00,31 ,0.002996,       1,0.267127, 0.36499
sgpcmbeC1.c1,2004,0720:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,0721:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,0722:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,0723:30:00,0 ,       .,       .,       .,       .