condition mean min max 4 h after light 10.9793385 10.848567 11.11011 8 h after light 9.793575 9.593292 9.993858 12 h after light 10.6192675 10.459861 10.778674 4 h after dark 9.381633 8.987873 9.775393 8 h after dark 10.261968 9.593292 10.930644 12 h after dark 9.330087 9.330087 9.330087