condition mean min max 0 h after light 0.528965 0.304607 0.753323 4 h after light 0.941081 0.831672 1.05049 8 h after light 1.169807 0.763254 1.57636 4 h after dark 1.6601750000000002 1.6569 1.66345 8 h after dark 1.260405 1.2 1.32081 12 h after dark 0.5522695 0.187199 0.91734