condition mean min max 0 h after light 6.4268 6.03344 6.82016 4 h after light 9.35565 8.1191 10.5922 8 h after light 7.763364999999999 7.13763 8.3891 4 h after dark 6.80138 6.00569 7.59707 8 h after dark 11.16535 10.4865 11.8442 12 h after dark 8.658965 7.04313 10.2748