condition mean min max 0 h after light 2.91706 2.17593 3.65819 4 h after light 4.533175 4.05762 5.00873 8 h after light 8.260915 8.14324 8.37859 4 h after dark 8.717535000000002 8.22849 9.20658 8 h after dark 4.80735 4.2784 5.3363 12 h after dark 5.121145 3.65328 6.58901