condition mean min max 4 h after light 15.47905 15.0187 15.9394 8 h after light 16.2895 15.0043 17.5747 12 h after light 17.0955 16.7075 17.4835 4 h after dark 22.948549999999997 21.7563 24.1408 8 h after dark 20.88025 20.1423 21.6182 12 h after dark 19.307000000000002 18.0026 20.6114