condition mean min max 4 h after light 11.0837795 9.836454 12.331105 8 h after light 8.772224 8.772224 8.772224 12 h after light 8.547449499999999 8.322675 8.772224 4 h after dark 8.606462 8.311439 8.901485 8 h after dark 8.665624000000001 8.618175 8.713073 12 h after dark 8.603082 8.603082 8.603082