The Spatial isolation Index was calculated for each income group, for each census tract.

This slide shows the results for the income group that earns more than 20 minimum salaries per month.

The global index was 0.23.  This means that where each member of this income group lives, about 23% of the population belongs to the same income group. And this number is statistically significant.

Looking to the local indexes in the map, we can observe that the census tracts were these rich people are more isolated are clustered around the central area of the city. Following the same pattern observed in the previous index (the spatial clustering index)