Description: 2011 Territorial AuthoritiesTerritorial Authorities dataset was constructed by aggregating meshblocks.Meshblocks when created are allocated a unique sevendigitnumber. Meshblocks are numbered in a numericsequence from north to south and west to east throughoutthe length and breadth of New Zealand. When a meshblockis split the final two digits of the original meshblock numberare changed. Statistics New Zealand maintains aconcordance file to ensure that boundaries relating toearlier meshblock patterns can also be generated.