datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,10 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,10 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,10 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,10 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,10 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,10 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,10 6:30:00,30 ,       0,8.996856,3.612526,2.461562
sgpcmbeC1.c1,2003,10 7:30:00,30 ,17.96723, 91.8627,45.41961,19.10914
sgpcmbeC1.c1,2003,10 8:30:00,30 ,47.82718,197.6776, 99.2382,50.11087
sgpcmbeC1.c1,2003,10 9:30:00,31 ,53.54802,347.3705,151.4937,90.09064
sgpcmbeC1.c1,2003,1010:30:00,31 ,55.57899,428.8215,178.3913,114.2828
sgpcmbeC1.c1,2003,1011:30:00,31 ,57.85183,  463.21,193.7652,128.2786
sgpcmbeC1.c1,2003,1012:30:00,31 ,57.87962,436.8268, 178.632,108.9355
sgpcmbeC1.c1,2003,1013:30:00,31 ,57.77374,403.8412,160.1921,107.4677
sgpcmbeC1.c1,2003,1014:30:00,31 ,32.36749,266.8736,132.2882,70.73639
sgpcmbeC1.c1,2003,1015:30:00,31 ,33.96098,225.0644,107.0008,52.02564
sgpcmbeC1.c1,2003,1016:30:00,31 ,31.36453,116.4659,69.13585,24.22464
sgpcmbeC1.c1,2003,1017:30:00,31 ,3.825125,57.77754,22.10334,12.61697
sgpcmbeC1.c1,2003,1018:30:00,30 ,       0,1.402172,0.162942,0.362822
sgpcmbeC1.c1,2003,1019:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,1020:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,1021:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,1022:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,1023:30:00,28 ,       0,       0,       0,       0