condition mean min max 4 h after light 7269.725442999999 6980.284565 7559.166321 8 h after light 5599.197742 5230.907568 5967.487916 12 h after light 5898.2415365 4949.114192 6847.368881 4 h after dark 3183.3681795 2347.429078 4019.307281 8 h after dark 2674.43535 1495.177105 3853.693595 12 h after dark 6298.30594 6298.30594 6298.30594