condition mean min max 4 h after light 4.315705 3.87449 4.75692 8 h after light 4.8116900000000005 4.54448 5.0789 12 h after light 6.11014 5.72611 6.49417 4 h after dark 7.54329 7.29828 7.7883 8 h after dark 5.915660000000001 5.7662 6.06512 12 h after dark 5.79249 5.58997 5.99501