Joined: 08/12/2005 07:39:47
The postal code dump has a new column 'Accuracy'. It gives an indication of the lat/lng accuracy.
Accuracy is an integer, the higher the better :
1 : estimated as average from numerically neigbouring postal codes
3 : same postal code, other name
4 : place name from geonames db
6 : postal code area centroid