condition mean min max 4 h after light 3.29997 2.73382 3.86612 8 h after light 4.607215 4.39246 4.82197 12 h after light 5.165675 4.63698 5.69437 4 h after dark 8.11424 7.40796 8.82052 8 h after dark 4.821375 4.56466 5.07809 12 h after dark 4.457985 3.88712 5.02885