condition mean min max 4 h after light 4104.593744 3951.239626 4257.947862 8 h after light 3076.074627 2946.193595 3205.955659 12 h after light 3019.693623 2849.02262 3190.364626 4 h after dark 1989.239057 1601.173582 2377.304532 8 h after dark 1876.304094 1377.883756 2374.724432 12 h after dark 4358.131174 4358.131174 4358.131174