condition mean min max 4 h after light 12.8307745 11.88304 13.778509 8 h after light 12.9493005 12.589002 13.309599 12 h after light 12.5414245 11.788338 13.294511 4 h after dark 11.708337 11.548139 11.868535 8 h after dark 12.165729 11.498867 12.832591 12 h after dark 10.586879 10.586879 10.586879