datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,02 0:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2006,02 1:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2006,02 2:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2006,02 3:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2006,02 4:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2006,02 5:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2006,02 6:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2006,02 7:30:00,23 ,       0,0.991896,0.358674,0.402626
sgpcmbeC1.c1,2006,02 8:30:00,28 ,0.000409,0.999906,0.378289,0.415997
sgpcmbeC1.c1,2006,02 9:30:00,28 ,0.000329,       1,0.431988,0.447767
sgpcmbeC1.c1,2006,0210:30:00,28 ,0.000111,       1,0.425575,0.450101
sgpcmbeC1.c1,2006,0211:30:00,28 ,0.000129,       1,0.430811,0.449524
sgpcmbeC1.c1,2006,0212:30:00,28 ,0.000424,       1,0.428063,0.439463
sgpcmbeC1.c1,2006,0213:30:00,28 ,0.000075,       1,0.419137,0.434409
sgpcmbeC1.c1,2006,0214:30:00,28 ,1.471E-6,       1,0.346757,0.415028
sgpcmbeC1.c1,2006,0215:30:00,28 ,0.000015,       1,0.381955,0.444712
sgpcmbeC1.c1,2006,0216:30:00,28 ,0.000016,0.999999,0.368394,0.427471
sgpcmbeC1.c1,2006,0217:30:00,28 ,7.356E-6,0.997262,0.333741,0.414185
sgpcmbeC1.c1,2006,0218:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2006,0219:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2006,0220:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2006,0221:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2006,0222:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2006,0223:30:00,0 ,       .,       .,       .,       .