condition mean min max 2 h after light 4.023205 3.0432 5.97796 6 h after light 8.316685 3.13924 12.6996 10 h after light 4.12886 2.73511 6.22609 14 h after light 3.5089208333333333 0.459745 6.56765 18 h after light 3.7501583333333333 2.40823 5.75211 2 h after dark 2.7579483333333332 1.64613 4.72171