condition mean min max 4 h after light 17.485636 14.639474 20.331798 8 h after light 16.606355999999998 15.925235 17.287477 12 h after light 16.493437999999998 16.249867 16.737009 4 h after dark 12.902325999999999 12.838078 12.966574 8 h after dark 12.8052685 12.641863 12.968674 12 h after dark 20.944742 20.944742 20.944742