datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,07 0:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2003,07 1:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2003,07 2:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2003,07 3:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2003,07 4:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2003,07 5:30:00,20 ,0.002617,0.993775,0.240984,0.361111
sgpcmbeC1.c1,2003,07 6:30:00,31 ,0.002627,0.996804,0.356876,  0.3899
sgpcmbeC1.c1,2003,07 7:30:00,31 ,0.001539,0.999932,0.285162,0.321388
sgpcmbeC1.c1,2003,07 8:30:00,31 ,0.000208,0.999966,0.326384,0.362784
sgpcmbeC1.c1,2003,07 9:30:00,31 ,0.000633,       1,0.331504,0.378477
sgpcmbeC1.c1,2003,0710:30:00,31 ,0.000995,       1,0.242496,0.318726
sgpcmbeC1.c1,2003,0711:30:00,31 ,0.002164,0.999992,0.239922,0.347742
sgpcmbeC1.c1,2003,0712:30:00,31 ,0.002493,0.999968,0.245366,0.322354
sgpcmbeC1.c1,2003,0713:30:00,31 ,0.004185,       1,0.280439,0.308925
sgpcmbeC1.c1,2003,0714:30:00,31 ,0.002866,0.999731,0.349122,0.321238
sgpcmbeC1.c1,2003,0715:30:00,31 ,0.004918,0.998805,0.360334, 0.34629
sgpcmbeC1.c1,2003,0716:30:00,31 ,0.005397,0.999838,0.392321,0.329169
sgpcmbeC1.c1,2003,0717:30:00,31 ,0.006113,0.999679, 0.35281,0.330511
sgpcmbeC1.c1,2003,0718:30:00,31 ,0.009488,0.992431,0.357953,0.341319
sgpcmbeC1.c1,2003,0719:30:00,31 ,0.005324,   0.994,0.291602,0.363398
sgpcmbeC1.c1,2003,0720:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2003,0721:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2003,0722:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2003,0723:30:00,0 ,       .,       .,       .,       .