condition mean min max 4 h after light 22.961457000000003 22.628657 23.294257 8 h after light 20.966649 19.670303 22.262995 12 h after light 20.300088000000002 19.606121 20.994055 4 h after dark 18.977867500000002 15.596736 22.358999 8 h after dark 16.714657 14.124075 19.305239 12 h after dark 18.908902 18.908902 18.908902