condition mean min max 4 h after light 11.150590000000001 8.94618 13.355 8 h after light 12.52025 11.7093 13.3312 12 h after light 14.098949999999999 12.0557 16.1422 4 h after dark 20.19865 18.4661 21.9312 8 h after dark 16.414 16.0983 16.7297 12 h after dark 14.902899999999999 14.7781 15.0277