condition mean min max 0 h after light 8.379635 7.90672 8.85255 4 h after light 13.4418 11.7777 15.1059 8 h after light 9.69604 8.96928 10.4228 4 h after dark 11.548695 9.84659 13.2508 8 h after dark 14.50955 13.2356 15.7835 12 h after dark 10.42425 10.0123 10.8362