Time until this source's layer was built, in milliseconds.
Bytes received for feature data.
Features written to the layer (after filtering, clipping and simplification).
Features read from the file and decoded.
Bytes received for index pages.
Layer name.
Source path.
Range requests issued for this tile (index pages and features). Header reads when a source is opened, cached index pages and reads shared with a concurrent tile are not counted.
Optionalskipped'zoom' if the source was skipped because the zoom is outside its range.
Statistics of one source within a tile.