condition mean min max 4 h after light 9.884545 9.68199 10.0871 8 h after light 7.137594999999999 7.06776 7.20743 12 h after light 7.667909999999999 7.18532 8.1505 4 h after dark 8.89198 8.18309 9.60087 8 h after dark 8.171365 7.68685 8.65588 12 h after dark 8.908470000000001 8.66802 9.14892