"population" "diameter" "Edinburgh" 60 9.144 "Stockholm" 63 9.652 "Florence" 75 10.160 "Genoa" 80 10.668 "Turin" 80 10.160 "Warsaw" 80 11.430 "Copenhagen" 90 12.192 "Lisbon" 120 14.224 "Palermo" 130 14.478 "Madrid" 140 14.732 "Berlin" 145 14.732 "Rome" 160 15.240 "Petersburgh" 180 15.748 "Venice" 200 16.256 "Dublin" 210 16.256 "Amsterdam" 220 17.272 "Moscow" 250 18.796 "Vienna" 255 19.304 "Naples" 380 23.876 "Paris" 690 31.496 "Constantinople" 900 35.052 "London" 1100 39.624