datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,01 0:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,01 1:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,01 2:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,01 3:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,01 4:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,01 5:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,01 6:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,01 7:30:00,2 ,0.786803,0.993562,0.890182,0.146201
sgpcmbeC1.c1,2004,01 8:30:00,31 , 0.00866,0.999685,0.479546,0.439616
sgpcmbeC1.c1,2004,01 9:30:00,31 ,0.007157,       1,0.503338,0.468409
sgpcmbeC1.c1,2004,0110:30:00,31 ,0.006226,       1, 0.50264,0.471332
sgpcmbeC1.c1,2004,0111:30:00,31 , 0.00342,       1,0.485883,0.447961
sgpcmbeC1.c1,2004,0112:30:00,31 ,0.004122,       1,0.484936,0.447256
sgpcmbeC1.c1,2004,0113:30:00,31 ,0.007797,0.999722,0.434756,0.457064
sgpcmbeC1.c1,2004,0114:30:00,31 ,0.007763,  0.9995,0.419344,0.439588
sgpcmbeC1.c1,2004,0115:30:00,31 ,0.006962,       1,0.437027,0.464744
sgpcmbeC1.c1,2004,0116:30:00,31 ,0.006371,0.999349,0.444415,0.447089
sgpcmbeC1.c1,2004,0117:30:00,21 ,0.007345,0.994042,0.443057,0.460191
sgpcmbeC1.c1,2004,0118:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,0119:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,0120:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,0121:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,0122:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,0123:30:00,0 ,       .,       .,       .,       .