condition mean min max 4 h after light 154.7286945 152.429747 157.027642 8 h after light 130.001288 130.001288 130.001288 12 h after light 129.3474415 128.693595 130.001288 4 h after dark 100.7272535 90.924428 110.530079 8 h after dark 114.491834 111.644717 117.338951 12 h after dark 148.390533 148.390533 148.390533