condition mean min max 0 h after light 8.346645 7.82631 8.86698 2 h after light 9.40638 9.23562 9.57714 4 h after light 7.967734999999999 7.51527 8.4202 8 h after light 6.729985 6.42025 7.03972 12 h after light 8.4893 7.8001 9.1785 2 h after dark 6.546545 5.35461 7.73848 4 h after dark 6.04313 4.99316 7.0931 8 h after dark 8.319424999999999 8.2244 8.41445 12 h after dark 9.142695 7.47469 10.8107