condition mean min max 4 h after light 4068.0 4068.0 4068.0 8 h after light 3984.05 3812.5 4155.6 12 h after light 4105.95 3571.1 4640.8 4 h after dark 3875.8 3691.3 4060.3 8 h after dark 3480.3999999999996 3006.1 3954.7 12 h after dark 3731.05 3637.1 3825.0