datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,09 0:30:00,30 ,       0,1.548485,0.152903, 0.36479
sgpcmbeC1.c1,2005,09 1:30:00,30 ,       0,1.623545,0.147799,0.411116
sgpcmbeC1.c1,2005,09 2:30:00,30 ,       0,1.620051,0.157707,0.418199
sgpcmbeC1.c1,2005,09 3:30:00,30 ,       0, 1.61316,0.184094,0.448592
sgpcmbeC1.c1,2005,09 4:30:00,30 ,       0,1.699361,0.219738,0.481798
sgpcmbeC1.c1,2005,09 5:30:00,30 ,       0, 1.56452,0.258386,0.486202
sgpcmbeC1.c1,2005,09 6:30:00,30 ,10.87503,39.30215,25.61453,8.097484
sgpcmbeC1.c1,2005,09 7:30:00,30 ,10.83636,74.16819, 51.5976,14.30443
sgpcmbeC1.c1,2005,09 8:30:00,30 ,40.53686,133.9999,71.11876,26.54551
sgpcmbeC1.c1,2005,09 9:30:00,30 ,44.86978,179.4414,78.41027,40.59118
sgpcmbeC1.c1,2005,0910:30:00,30 ,25.05672, 189.705,73.10775,48.77698
sgpcmbeC1.c1,2005,0911:30:00,30 ,15.15861,173.5352,72.52553,59.89351
sgpcmbeC1.c1,2005,0912:30:00,30 ,  3.3375,255.8012,64.84156, 68.0192
sgpcmbeC1.c1,2005,0913:30:00,30 ,13.00845,244.1232,65.74902,63.69541
sgpcmbeC1.c1,2005,0914:30:00,30 ,32.63182,209.6274,88.41991,65.96773
sgpcmbeC1.c1,2005,0915:30:00,30 ,47.76165,212.3405,77.28918,44.36793
sgpcmbeC1.c1,2005,0916:30:00,30 ,6.130008,129.4575,63.37581,25.71229
sgpcmbeC1.c1,2005,0917:30:00,30 ,7.201857,91.68282,55.17727,16.86924
sgpcmbeC1.c1,2005,0918:30:00,30 ,2.715647,38.66941,17.27517,10.24406
sgpcmbeC1.c1,2005,0919:30:00,30 ,       0,1.522281,0.182682, 0.42451
sgpcmbeC1.c1,2005,0920:30:00,30 ,       0,1.503271,0.132982, 0.34062
sgpcmbeC1.c1,2005,0921:30:00,29 ,       0,1.259621,0.094511,0.283933
sgpcmbeC1.c1,2005,0922:30:00,30 ,       0,1.559631,0.144812,0.379225
sgpcmbeC1.c1,2005,0923:30:00,30 ,       0,1.545247,0.181706,0.447588