datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,06 0:30:00,17 ,  1.5951, 4.16209,3.207299,0.895017
sgpcmbeC1.c1,2001,06 1:30:00,17 ,1.549279,4.111424,3.214332,0.890895
sgpcmbeC1.c1,2001,06 2:30:00,17 ,1.422463,4.224958,3.223525, 0.91135
sgpcmbeC1.c1,2001,06 3:30:00,17 ,1.410656,4.014885,3.152078,0.862985
sgpcmbeC1.c1,2001,06 4:30:00,17 ,1.282668, 4.73397,3.197461, 0.96027
sgpcmbeC1.c1,2001,06 5:30:00,17 ,1.278197,4.698894,3.246274,0.985907
sgpcmbeC1.c1,2001,06 6:30:00,17 ,1.287167,5.008307,3.314382,0.989946
sgpcmbeC1.c1,2001,06 7:30:00,19 ,1.309443,4.979888,3.304544,0.916087
sgpcmbeC1.c1,2001,06 8:30:00,21 ,1.338115,4.900126,3.276841,0.890549
sgpcmbeC1.c1,2001,06 9:30:00,21 ,1.340987,5.126634,3.340612,0.930885
sgpcmbeC1.c1,2001,0610:30:00,20 ,1.470234,4.608748,3.267673,0.867103
sgpcmbeC1.c1,2001,0611:30:00,20 ,1.578097,4.316713,3.267107,0.838267
sgpcmbeC1.c1,2001,0612:30:00,20 ,1.662268,  4.3327,3.275981,0.818034
sgpcmbeC1.c1,2001,0613:30:00,20 ,1.681547,4.363008,3.305075,0.829782
sgpcmbeC1.c1,2001,0614:30:00,21 ,1.651809,4.415417,3.291883, 0.84069
sgpcmbeC1.c1,2001,0615:30:00,21 ,1.580397,4.580343,3.280364,0.875644
sgpcmbeC1.c1,2001,0616:30:00,20 ,  1.6654,4.333429,3.315405,0.846977
sgpcmbeC1.c1,2001,0617:30:00,20 ,1.663463,4.336327,3.293861,0.874339
sgpcmbeC1.c1,2001,0618:30:00,20 ,1.549741,4.612249,3.257515,0.893299
sgpcmbeC1.c1,2001,0619:30:00,20 ,1.544224,4.589814,3.321371,0.908987
sgpcmbeC1.c1,2001,0620:30:00,20 ,1.527412, 4.63847,3.334994,0.964303
sgpcmbeC1.c1,2001,0621:30:00,18 ,1.541955,4.662179,3.229221,0.978901
sgpcmbeC1.c1,2001,0622:30:00,18 ,1.493681,4.644115,3.343476,1.009048
sgpcmbeC1.c1,2001,0623:30:00,17 , 1.45677,4.926575,   3.329,0.987818