condition mean min max 4 h after light 3.460565 2.84209 4.07904 8 h after light 4.1558 2.40755 5.90405 12 h after light 8.067145 6.93852 9.19577 4 h after dark 10.652455 9.66371 11.6412 8 h after dark 8.829464999999999 8.14876 9.51017 12 h after dark 5.943095 4.55658 7.32961