Table 2.

A subset of the environmental characteristics used in BigO.

Environmental characteristic	How it was computed
Number of athletics or sports facilities in the region	Using publicly available data sources, compute the number of athletics or sports facilities in the region.
Number of fast food outlets in the region	Using publicly available data sources, compute the number of fast food outlets in the region.
Average number of restaurants within a 100-meter radius from locations within the region	Create a 30-meter point grid inside the region. For each point, compute the number of restaurants within a 100-meter radius. This value is the average across all points inside the region.