datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,08 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,08 1:30:00,29 ,       0,0.157303,0.005424, 0.02921
sgpcmbeC1.c1,2001,08 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,08 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,08 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,08 5:30:00,31 ,       0,2.771802,0.381944,  0.5855
sgpcmbeC1.c1,2001,08 6:30:00,31 ,3.992455, 36.4873,20.91204,9.042196
sgpcmbeC1.c1,2001,08 7:30:00,31 ,25.88925, 87.4642,63.52133,18.36643
sgpcmbeC1.c1,2001,08 8:30:00,31 , 37.2123,131.1248,106.2159,25.14438
sgpcmbeC1.c1,2001,08 9:30:00,31 ,62.83655,176.5667,140.2313,26.95007
sgpcmbeC1.c1,2001,0810:30:00,31 ,67.05356,192.5122, 155.911,30.88894
sgpcmbeC1.c1,2001,0811:30:00,31 ,  23.772,198.2925, 157.753,44.48505
sgpcmbeC1.c1,2001,0812:30:00,31 ,57.48954,209.7343,167.7885, 33.5369
sgpcmbeC1.c1,2001,0813:30:00,31 ,94.87142,198.5063, 168.343,24.65842
sgpcmbeC1.c1,2001,0814:30:00,31 , 82.5853,184.4033,150.6222,27.68293
sgpcmbeC1.c1,2001,0815:30:00,31 ,36.74488, 161.853,124.9943,30.96255
sgpcmbeC1.c1,2001,0816:30:00,31 ,3.003803,138.2663,98.21707,31.79117
sgpcmbeC1.c1,2001,0817:30:00,31 ,       0,91.79515,61.15759,22.14034
sgpcmbeC1.c1,2001,0818:30:00,31 ,       0,44.97731,24.29186,11.93465
sgpcmbeC1.c1,2001,0819:30:00,31 ,       0,5.951771,1.390064,1.678643
sgpcmbeC1.c1,2001,0820:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0821:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0822:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0823:30:00,31 ,       0,       0,       0,       0