condition mean min max 4 h after light 6.345153333333333 4.33226 7.38212 8 h after light 4.69102 1.37287 7.53887 12 h after light 4.8468333333333335 2.7953 7.77481 4 h after dark 7.151673333333333 5.51854 9.15249 8 h after dark 9.552240000000001 7.07347 12.7786 12 h after dark 7.0383 5.09868 9.05716