condition mean min max 4 h after light 10.340083 10.19866 10.481506 8 h after light 9.2585825 8.661177 9.855988 12 h after light 9.2207575 8.541443 9.900072 4 h after dark 9.7233495 9.043294 10.403405 8 h after dark 8.0148525 6.955581 9.074124 12 h after dark 8.68986 8.68986 8.68986