You linked to the download page where there's only the Cell Networks database.
https://github.com/mozilla/ichnaea/issues/330
In a nutshell though, we don't know how to do this yet without creating a privacy nightmare.
I wrote about some of the topics a while back. Not all of it is up-to-date but it gives the broader context: http://blog.hannosch.eu/2013/12/mozilla-location-service-wha...