This map shows how much corrosion vary greatly in New Zealand. Macroscopic differences exist between areas, with coastal regions being the most severe.
Adapted from "Corrosivity Mapping - A Sensitive and Cost effective Means of Characterizing a Region's Levels of Atmospheric Corrosion" by G.A. King, paper 638, CORROSION 93, NACE International, Houston, TX, 1993.
