condition mean min max 4 h after light 10.190304999999999 8.80871 11.5719 8 h after light 7.216175 6.85716 7.57519 12 h after light 8.31196 6.76518 9.85874 4 h after dark 13.196133333333334 12.1737 15.0393 8 h after dark 11.95637 7.24441 17.6211 12 h after dark 15.569433333333333 11.0428 23.4496