condition mean min max 0 h after light 18.7922 17.3083 20.2761 2 h after light 10.024085 9.09277 10.9554 4 h after light 12.17775 11.8095 12.546 8 h after light 13.343350000000001 12.1606 14.5261 12 h after light 14.87255 13.4415 16.3036 2 h after dark 13.75505 13.7502 13.7599 4 h after dark 14.26135 12.8893 15.6334 8 h after dark 23.46245 21.9079 25.017 12 h after dark 19.30805 18.3011 20.315