datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,09 0:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2007,09 1:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2007,09 2:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2007,09 3:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2007,09 4:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2007,09 5:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2007,09 6:30:00,29 ,0.000308,0.998866,0.371756,0.352169
sgpcmbeC1.c1,2007,09 7:30:00,29 ,0.000686,0.999578,0.465083,0.360716
sgpcmbeC1.c1,2007,09 8:30:00,30 ,0.001135,0.999965,0.492909,0.399777
sgpcmbeC1.c1,2007,09 9:30:00,30 ,0.000703,0.999987,  0.4936,0.427451
sgpcmbeC1.c1,2007,0910:30:00,30 ,0.000768,       1,0.490431,0.431176
sgpcmbeC1.c1,2007,0911:30:00,30 ,0.000474,0.999988,0.465544,0.401081
sgpcmbeC1.c1,2007,0912:30:00,30 ,0.000439,0.999978,0.479562,0.399711
sgpcmbeC1.c1,2007,0913:30:00,30 , 0.00083,0.999911,0.510049,0.424034
sgpcmbeC1.c1,2007,0914:30:00,29 ,0.000745,0.999831,0.498518,0.409893
sgpcmbeC1.c1,2007,0915:30:00,29 ,9.212E-6,0.999804, 0.40724,0.397704
sgpcmbeC1.c1,2007,0916:30:00,29 ,0.000036, 0.99989,0.354648,0.351601
sgpcmbeC1.c1,2007,0917:30:00,29 ,0.000125,0.999945,0.360976,0.345372
sgpcmbeC1.c1,2007,0918:30:00,19 ,       0,0.998192, 0.34123,0.378244
sgpcmbeC1.c1,2007,0919:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2007,0920:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2007,0921:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2007,0922:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2007,0923:30:00,0 ,       .,       .,       .,       .