condition mean min max 4 h after light 6.89594 5.64896 8.58378 8 h after light 6.304493333333333 3.36225 8.02093 12 h after light 8.490613333333332 5.28222 10.2354 4 h after dark 6.353623333333333 5.98109 6.60992 8 h after dark 4.88583 3.48045 5.83304 12 h after dark 5.42975 4.68978 6.53042