condition mean min max 0 h after light 2.44719 2.40139 2.49299 4 h after light 0.636188 0.610619 0.661757 8 h after light 0.455054 0.317215 0.592893 4 h after dark 0.9778135 0.401807 1.55382 8 h after dark 1.612645 1.48734 1.73795 12 h after dark 0.7584835 0.679106 0.837861