condition mean min max 0 h after light 6.578575 6.46922 6.68793 2 h after light 1.799775 1.69733 1.90222 4 h after light 2.670425 2.31509 3.02576 8 h after light 3.28043 2.86328 3.69758 12 h after light 4.251115 3.40339 5.09884 2 h after dark 5.23474 4.65505 5.81443 4 h after dark 7.62544 7.05667 8.19421 8 h after dark 10.14875 10.1061 10.1914 12 h after dark 7.729505 7.28919 8.16982