Marker size based on number of records in cluster

[rudibroekhuizen]

I am using the trackmap panel in a dashboard to explore a GBIF dataset. Using the following query I can zoom in to streetlevel, and show the number of records in the tooltip for each cluster.

WITH a AS (
SELECT
eventdate AS time,
decimallatitude,
decimallongitude,
geom,
COUNT(*) OVER() AS cnt
FROM explore.gbif
WHERE $__timeFilter(eventdate)
AND decimallatitude >= $minLat
AND decimallatitude <= $maxLat
AND decimallongitude >= $minLon
AND decimallongitude <= $maxLon
), b AS (
SELECT
time,
decimallatitude,
decimallongitude,
ST_ClusterKMeans(geom, LEAST(cnt::integer, 200)) OVER() AS clusters
FROM a
)
SELECT
clusters,
COUNT(clusters) AS tooltip,
AVG(decimallatitude) AS latitude,
AVG(decimallongitude) AS longitude
FROM b
GROUP BY 1
ORDER BY 1;

Is it possible to use the number of records in a cluster to set the size of the marker? Or an option to use circles with sizes depending on the number of records in a cluster, like available in the worldmap panel?

Maximum zoom using LEAST and COUNT OVER():