condition mean min max 4 h after light 6.074335 5.15011 6.99856 8 h after light 7.478294999999999 7.10814 7.84845 12 h after light 9.139155 8.7024 9.57591 4 h after dark 13.241800000000001 13.1035 13.3801 8 h after dark 12.931750000000001 12.8878 12.9757 12 h after dark 11.30245 11.26 11.3449