condition mean min max 4 h after light 3017.0 3017.0 3017.0 8 h after light 3247.45 2800.1 3694.8 12 h after light 3476.55 3331.3 3621.8 4 h after dark 4378.0 3369.2 5386.8 8 h after dark 4627.95 4279.7 4976.2 12 h after dark 3521.3500000000004 3190.9 3851.8