condition mean min max 4 h after light 51.759837 48.838629 54.681045 8 h after light 46.252638 42.796507 49.708769 12 h after light 49.766919 40.42285 59.110988 4 h after dark 50.6680075 46.65497 54.681045 8 h after dark 61.569121 46.44332 76.694922 12 h after dark 56.634697 56.634697 56.634697