Prosečne GPS koordinate za poštanski broj ch30: 53.376, -3.105
Spisak gradova:
>> Wirral CH30, Merseyside, England, Wirral District (B), GPS koordinate: 53.3762,-3.105
Spisak gradova:
>> Wirral CH30, Merseyside, England, Wirral District (B), GPS koordinate: 53.3762,-3.105