condition mean min max 4 h after light 63.90075 59.149933 68.651567 8 h after light 69.4267885 64.476249 74.377328 12 h after light 80.4855605 76.219086 84.752035 4 h after dark 84.440508 76.328044 92.552972 8 h after dark 88.454554 86.031231 90.877877 12 h after dark 54.526261 54.526261 54.526261