condition mean min max 4 h after light 11.3414 10.8496 11.8332 8 h after light 21.6166 19.6875 23.5457 12 h after light 27.2705 26.8838 27.6572 4 h after dark 65.2125 64.2746 66.1504 8 h after dark 45.1747 44.4526 45.8968 12 h after dark 31.291800000000002 31.1438 31.4398