condition mean min max 4 h after light 16.93925 15.4668 18.4117 8 h after light 10.556049999999999 10.2813 10.8308 12 h after light 11.2812 11.0082 11.5542 4 h after dark 17.3953 17.1842 17.7824 8 h after dark 20.053866666666668 18.8752 20.7852 12 h after dark 19.092966666666666 18.2928 19.9193