condition mean min max 0 h after light 9.417055000000001 9.03442 9.79969 4 h after light 10.438649999999999 10.3984 10.4789 8 h after light 9.094255 8.71974 9.46877 4 h after dark 12.5433 11.0096 14.077 8 h after dark 12.8897 12.6039 13.1755 12 h after dark 8.869465 8.07931 9.65962