condition mean min max 0 h after light 3.3258 2.45335 4.19825 4 h after light 3.33459 3.10443 3.56475 8 h after light 5.623055000000001 5.1919 6.05421 4 h after dark 3.977905 3.29886 4.65695 8 h after dark 2.42065 2.0848 2.7565 12 h after dark 4.319735 4.27217 4.3673