Fig. 1.

Overlaying multiple zonations improves choropleth map accuracy. a SA2s with MH ED presentation rates statistically higher than average in Perth. b Number of times each SA1 is comprised in a high-rate area across 100 zonations. c MSOAs with crime rates statistically higher than average in London. d Number of times each LSOA is comprised in a high-rate area across 100 zonations. e Areas with mean income statistically lower than average in Georgia. f Number of times each CBG is comprised in a low-income area across 100 zonations. The areas in e correspond to the first zonation out of the 100 underlying (f). In b, d, f, areas are colored from yellow (one) to blue (100), with white areas representing zero