condition mean min max 4 h after light 4.72199 4.19118 5.2528 8 h after light 4.88143 4.65068 5.11218 12 h after light 6.194025 5.81056 6.57749 4 h after dark 9.0122 7.7089 10.3155 8 h after dark 7.04181 6.96488 7.11874 12 h after dark 6.700279999999999 6.56229 6.83827