condition mean min max 0 h after light 0.269677 0.179571 0.359783 4 h after light 0.2685325 0.18297 0.354095 8 h after light 0.269054 0.182792 0.355316 4 h after dark 0.353769 0.176362 0.531176 8 h after dark 0.6219745 0.530566 0.713383 12 h after dark 0.528224 0.17933 0.877118