datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,05 0:30:00,31 ,       0,1.067323,0.116947,0.262233
sgpcmbeC1.c1,2005,05 1:30:00,31 ,       0,1.253722,0.069915,0.236039
sgpcmbeC1.c1,2005,05 2:30:00,31 ,       0, 1.21735,0.080492,0.241806
sgpcmbeC1.c1,2005,05 3:30:00,31 ,       0,0.995218,0.072319,0.231832
sgpcmbeC1.c1,2005,05 4:30:00,31 ,       0,1.911301,0.119289,0.377687
sgpcmbeC1.c1,2005,05 5:30:00,31 ,1.099175,22.91823,11.45099,6.514437
sgpcmbeC1.c1,2005,05 6:30:00,31 ,11.50114,132.1853,  64.367,26.51293
sgpcmbeC1.c1,2005,05 7:30:00,31 ,53.46941, 252.713,132.9855,49.34984
sgpcmbeC1.c1,2005,05 8:30:00,31 ,19.77209,427.4862,189.5672, 90.8113
sgpcmbeC1.c1,2005,05 9:30:00,31 ,38.90083,674.3722,249.8503, 132.704
sgpcmbeC1.c1,2005,0510:30:00,30 ,96.27354,483.1875,285.3955,109.6286
sgpcmbeC1.c1,2005,0511:30:00,31 ,100.5362,832.7008,324.7311,164.6962
sgpcmbeC1.c1,2005,0512:30:00,31 ,84.39305, 525.657, 290.378,143.0177
sgpcmbeC1.c1,2005,0513:30:00,31 ,104.6335, 517.457,  268.46, 114.324
sgpcmbeC1.c1,2005,0514:30:00,31 ,30.37472,523.4003,238.3958,101.5237
sgpcmbeC1.c1,2005,0515:30:00,31 , 9.76955,437.2687,211.6107,99.78993
sgpcmbeC1.c1,2005,0516:30:00,31 ,10.98748,305.7066,164.1914, 75.1704
sgpcmbeC1.c1,2005,0517:30:00,31 ,12.63165,204.0296,115.8768,50.32625
sgpcmbeC1.c1,2005,0518:30:00,31 ,5.922215,112.8416,64.95768,24.24366
sgpcmbeC1.c1,2005,0519:30:00,31 ,0.332547,30.08809,10.74847,6.085499
sgpcmbeC1.c1,2005,0520:30:00,31 ,       0,1.574456, 0.22232,0.450926
sgpcmbeC1.c1,2005,0521:30:00,31 ,       0,1.281575,  0.1058, 0.29802
sgpcmbeC1.c1,2005,0522:30:00,31 ,       0,0.757187,0.080023,0.213666
sgpcmbeC1.c1,2005,0523:30:00,31 ,       0,1.388062, 0.08612,0.261359