condition mean min max 4 h after light 11.3115345 10.385442 12.237627 8 h after light 9.7850425 9.410805 10.15928 12 h after light 10.317525 10.184591 10.450459 4 h after dark 9.423714 9.189749 9.657679 8 h after dark 10.353264 8.901485 11.805043 12 h after dark 11.325297 11.325297 11.325297