datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,09 0:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,09 1:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,09 2:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,09 3:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,09 4:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,09 5:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,09 6:30:00,30 ,7.351769,25.96025,16.50532,4.874031
sgpcmbeC1.c1,2005,09 7:30:00,30 ,5.791253,40.07006,16.90875,8.399586
sgpcmbeC1.c1,2005,09 8:30:00,30 ,4.763024,81.00458,26.47777,21.69453
sgpcmbeC1.c1,2005,09 9:30:00,29 , 2.67689,94.64949,23.96648,24.63755
sgpcmbeC1.c1,2005,0910:30:00,30 ,0.951608, 102.561,27.16208,29.79688
sgpcmbeC1.c1,2005,0911:30:00,30 ,1.289462,101.1479,31.71746,31.92618
sgpcmbeC1.c1,2005,0912:30:00,30 ,1.054778,161.5811,31.52877,39.83104
sgpcmbeC1.c1,2005,0913:30:00,30 ,1.207097,100.9916,23.75367,26.17271
sgpcmbeC1.c1,2005,0914:30:00,30 ,1.127393,101.1389,24.94139,28.88553
sgpcmbeC1.c1,2005,0915:30:00,30 ,1.255575, 80.4635,  20.254,21.29355
sgpcmbeC1.c1,2005,0916:30:00,30 ,4.448553,60.66422,16.49986,14.67162
sgpcmbeC1.c1,2005,0917:30:00,30 ,6.676706,39.00121,16.82264,7.911998
sgpcmbeC1.c1,2005,0918:30:00,30 ,2.727081,20.01269,10.97108,5.254978
sgpcmbeC1.c1,2005,0919:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0920:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0921:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0922:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0923:30:00,26 ,       0,       0,       0,       0