Gjennomsnittlig GPS-koordinater for postnummer 289-06: 50.194, 15.239
Notering byer:
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Opolánky 289-06,
Nymburk, GPS-koordinater: 50.3,15.2333
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Oškobrh 289-06,
Nymburk, GPS-koordinater: 50.15,15.2333
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Sány 289-06,
Nymburk, GPS-koordinater: 50.1333,15.25