condition mean min max 4 h after light 0.906953 0.584986 1.22892 8 h after light 0.5274135 0.451899 0.602928 12 h after light 0.7784955 0.722956 0.834035 4 h after dark 1.9518233333333332 1.42856 2.34821 8 h after dark 1.28202 1.07108 1.4512 12 h after dark 1.61001 1.12449 2.23375