Marker Clustering - How to change the clustering tolerance

[hyungouk]

I am currently using angular ui-leaflet to deploy markers with marker clustering similar to http://angular-ui.github.io/ui-leaflet/examples/0000-viewer.html#/markers/clustering-without-overlays-example

I wonder if there is anyway to change the clustering distance tolerance.
for example, on zoom level 13, two markers are about 4 blocks away on the map. then when the zoom level becomes 12, the two markers get clustered. But, I would like to reduce the cluster starting distance so that they still remains as separate markers on the map, then get clustered on zoom level 11.

[BAByrne]

maxClusterRadius allows you to "use a function that accepts the current map zoom and returns the maximum cluster radius in pixels." This allows you to customize the cluster radius at each zoom level.