condition mean min max 4 h after light 0.3940895 0.167866 0.620313 8 h after light 0.41976800000000003 0.4112 0.428336 12 h after light 0.24141800000000002 0.148033 0.334803 4 h after dark 0.6121219999999999 0.346342 0.877902 8 h after dark 0.279567 0.219971 0.339163 12 h after dark 0.407742 0.288747 0.526737