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 ,       0,27.77431,8.219411,7.899169
sgpcmbeC1.c1,2006,09 7:30:00,30 , 0.00748, 174.319,76.57608,67.14741
sgpcmbeC1.c1,2006,09 8:30:00,27 ,0.019882,368.3203,205.1505,152.0537
sgpcmbeC1.c1,2006,09 9:30:00,28 ,0.043427, 547.679,349.6622,206.4255
sgpcmbeC1.c1,2006,0910:30:00,30 ,0.206924,682.7974,482.0245,242.6464
sgpcmbeC1.c1,2006,0911:30:00,30 ,0.418808,760.5613,509.9561,273.3681
sgpcmbeC1.c1,2006,0912:30:00,30 ,0.319809,798.4019,514.5165,275.5705
sgpcmbeC1.c1,2006,0913:30:00,30 ,1.227905, 730.314,487.3599,268.1979
sgpcmbeC1.c1,2006,0914:30:00,30 ,0.239746,629.2191,382.3609,249.4995
sgpcmbeC1.c1,2006,0915:30:00,30 ,       0, 480.981,308.3578,178.3784
sgpcmbeC1.c1,2006,0916:30:00,30 ,0.171005,300.6805,165.3826,104.8898
sgpcmbeC1.c1,2006,0917:30:00,30 ,       0,124.1329,57.89874,41.97261
sgpcmbeC1.c1,2006,0918:30:00,30 ,       0,17.58889, 4.04698,4.972803
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