The presence of a stream segment in a grid cell is indicated by the code '1'.

Random direction was used to approach ten houses from each selected grid cell.

The study area was stratified based on the level of planning and drainage present within each grid cell.

No checklists were available for 88 grid cells (2.2% of the total).

For each 1-kilometer-square grid cell, the distance was calculated from its geographic center to the nearest supermarket.

No single points of contact between neighboring grid cells.

The fall speed is measured in units called G, or grid cells per frame.

The center is known for the discovery of grid cells.

This is the level at which the population living in that grid cell is assumed to be exposed.

- The grid cells are aggregated to estimate the health impact of the change in air quality across the study region.