condition mean min max 4 h after light 8.74168 7.56214 9.92122 8 h after light 9.19743 8.14326 10.2516 12 h after light 9.876585 9.48967 10.2635 4 h after dark 9.924756666666667 9.09859 11.0374 8 h after dark 11.4756 10.9445 12.464 12 h after dark 9.619326666666668 9.09961 10.0219