condition mean min max 0 h after light 3.84037 3.53993 4.14081 2 h after light 3.34518 3.21322 3.47714 4 h after light 2.498595 2.08916 2.90803 8 h after light 4.236915 4.19748 4.27635 12 h after light 6.858665 6.25589 7.46144 2 h after dark 7.73522 7.634 7.83644 4 h after dark 6.17932 5.67714 6.6815 8 h after dark 5.14687 5.01986 5.27388 12 h after dark 4.389315 3.96508 4.81355