condition mean min max 4 h after light 3.8178 2.78586 4.84022 8 h after light 3.306735 0.921765 5.73519 12 h after light 5.201176666666667 2.56366 7.32175 4 h after dark 8.49233 7.47846 10.1019 8 h after dark 8.965213333333333 7.40956 10.3026 12 h after dark 6.77256 6.17883 7.71947