datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,11 0:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2005,11 1:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2005,11 2:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2005,11 3:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2005,11 4:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2005,11 5:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2005,11 6:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2005,11 7:30:00,29 ,0.000563,       1, 0.21589, 0.33039
sgpcmbeC1.c1,2005,11 8:30:00,29 ,0.000607,       1,0.296328,0.379009
sgpcmbeC1.c1,2005,11 9:30:00,30 , 0.00023,       1,0.375656,0.445028
sgpcmbeC1.c1,2005,1110:30:00,30 ,0.000035,       1,0.316112,0.400929
sgpcmbeC1.c1,2005,1111:30:00,30 ,0.000315,       1,0.230788,0.367287
sgpcmbeC1.c1,2005,1112:30:00,30 ,0.000038,       1,0.214501,0.341714
sgpcmbeC1.c1,2005,1113:30:00,30 ,4.742E-7,       1,0.260955,0.383738
sgpcmbeC1.c1,2005,1114:30:00,30 , 8.49E-6,       1,0.273553,0.395631
sgpcmbeC1.c1,2005,1115:30:00,30 ,3.688E-6,       1,0.310884,0.422982
sgpcmbeC1.c1,2005,1116:30:00,30 ,0.000032,0.986504,0.298002,0.377136
sgpcmbeC1.c1,2005,1117:30:00,1 ,       0,       0,       0,       .
sgpcmbeC1.c1,2005,1118:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2005,1119:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2005,1120:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2005,1121:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2005,1122:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2005,1123:30:00,0 ,       .,       .,       .,       .