condition mean min max 4 h after light 3132.013205 2376.80898 3887.21743 8 h after light 3351.419768 3109.833844 3593.005692 12 h after light 3183.5202615 3081.078211 3285.962312 4 h after dark 2511.7070315 2272.032744 2751.381319 8 h after dark 2639.6573955 2531.881262 2747.433529 12 h after dark 3065.53626 3065.53626 3065.53626