condition mean min max 4 h after light 11.933306 7.414517999999999 16.89413 8 h after light 8.045642333333333 5.0196819999999995 12.39582 12 h after light 13.840633333333333 11.15687 17.29114 16 h after light 12.164723333333333 9.52665 15.39599 4 h after dark 10.220660666666667 6.881252000000001 12.581610000000001 8 h after dark 14.48925 12.35875 17.2186