datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2000,09 0:30:00,18 ,       0,23.01779,5.136164,6.553466
sgpcmbeC1.c1,2000,09 1:30:00,18 ,       0,27.18509, 5.44623, 7.30797
sgpcmbeC1.c1,2000,09 2:30:00,18 ,       0,30.23304,7.716988,10.09624
sgpcmbeC1.c1,2000,09 3:30:00,17 ,       0,66.03853,11.74663,18.72555
sgpcmbeC1.c1,2000,09 4:30:00,17 ,       0,81.22453,11.96206,22.28763
sgpcmbeC1.c1,2000,09 5:30:00,17 ,       0,160.2133,17.21553,40.07168
sgpcmbeC1.c1,2000,09 6:30:00,17 ,       0,224.5503,20.15248,  54.478
sgpcmbeC1.c1,2000,09 7:30:00,18 ,       0,17.88669,3.438294, 5.20139
sgpcmbeC1.c1,2000,09 8:30:00,20 ,       0,52.38369,4.972379, 11.5733
sgpcmbeC1.c1,2000,09 9:30:00,20 ,       0, 57.7416,5.696208,12.84408
sgpcmbeC1.c1,2000,0910:30:00,20 ,       0,24.06853,3.740732,5.928566
sgpcmbeC1.c1,2000,0911:30:00,19 ,       0,11.30773,3.023964,4.183831
sgpcmbeC1.c1,2000,0912:30:00,18 ,       0,12.20769,2.690772,4.345786
sgpcmbeC1.c1,2000,0913:30:00,19 ,       0,25.06735,3.625164,6.495004
sgpcmbeC1.c1,2000,0914:30:00,20 ,       0, 12.0815,2.356667,3.775434
sgpcmbeC1.c1,2000,0915:30:00,19 ,       0,9.761226,1.977672,3.275335
sgpcmbeC1.c1,2000,0916:30:00,18 ,       0,8.965099,1.655699,2.877556
sgpcmbeC1.c1,2000,0917:30:00,18 ,       0,10.94526,2.375899,3.707184
sgpcmbeC1.c1,2000,0918:30:00,20 ,       0,12.48658,3.027448,4.519917
sgpcmbeC1.c1,2000,0919:30:00,20 ,       0,11.95056, 3.02367,4.623755
sgpcmbeC1.c1,2000,0920:30:00,19 ,       0,12.71102,2.950781,4.492026
sgpcmbeC1.c1,2000,0921:30:00,18 ,       0,12.35981,3.090309,4.205044
sgpcmbeC1.c1,2000,0922:30:00,18 ,       0,62.73057,6.851605,14.66302
sgpcmbeC1.c1,2000,0923:30:00,18 ,       0,15.70719, 3.65474,4.880906