datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,09 0:30:00,23 ,1.336139,4.333783,2.741498,0.841559
sgpcmbeC1.c1,2004,09 1:30:00,23 ,1.383932,4.536464,2.748186,0.840771
sgpcmbeC1.c1,2004,09 2:30:00,22 ,1.409781,4.661235,2.758701,0.840186
sgpcmbeC1.c1,2004,09 3:30:00,21 ,1.383856,4.692785,2.790745,0.866766
sgpcmbeC1.c1,2004,09 4:30:00,22 ,1.332265,4.682586, 2.74995,0.856141
sgpcmbeC1.c1,2004,09 5:30:00,22 ,1.340416,4.619682,2.780531,0.872116
sgpcmbeC1.c1,2004,09 6:30:00,22 ,1.363441, 4.52426,2.833979,0.903911
sgpcmbeC1.c1,2004,09 7:30:00,23 ,1.430767,4.820653,2.897787,0.949074
sgpcmbeC1.c1,2004,09 8:30:00,26 ,1.416961,4.570075,2.711232,0.891602
sgpcmbeC1.c1,2004,09 9:30:00,24 ,1.384686,4.351973,2.686904,0.873069
sgpcmbeC1.c1,2004,0910:30:00,22 ,1.320219,4.229969,2.689187,0.848527
sgpcmbeC1.c1,2004,0911:30:00,23 ,1.333235,4.139137,2.613751,0.839457
sgpcmbeC1.c1,2004,0912:30:00,23 ,1.318399,4.107218,2.632585,0.858506
sgpcmbeC1.c1,2004,0913:30:00,23 ,1.305243,4.212326, 2.66986,0.877349
sgpcmbeC1.c1,2004,0914:30:00,21 , 1.28959,4.052792,  2.6885,0.903613
sgpcmbeC1.c1,2004,0915:30:00,22 ,1.372348,4.000413, 2.69778,0.869786
sgpcmbeC1.c1,2004,0916:30:00,21 ,1.339721,3.911397, 2.70843,0.865762
sgpcmbeC1.c1,2004,0917:30:00,22 ,1.324714,3.927343,2.654349,0.825745
sgpcmbeC1.c1,2004,0918:30:00,21 ,1.431195,3.965656,2.683981,0.837987
sgpcmbeC1.c1,2004,0919:30:00,22 ,1.474771,4.035533,2.680544,0.825894
sgpcmbeC1.c1,2004,0920:30:00,22 ,1.518598, 4.07327,2.702461,0.830057
sgpcmbeC1.c1,2004,0921:30:00,23 , 1.42771,4.054477,2.686395,0.837941
sgpcmbeC1.c1,2004,0922:30:00,23 ,1.292589,4.040938,2.684604,0.839063
sgpcmbeC1.c1,2004,0923:30:00,21 ,1.284058,4.064984,2.755678, 0.84694