A way to retrieve the specific area which a tem is obtainable in a location

[mattieboy079]

It would be nice if you could retrieve the specific area of locations where tem are obtainable, since this could nice to see which tem are available together in some area's.
When I retrieve data from all tems, I can only see what locations they are obtainable, but the cumulative frequency gets above 100% because the tem of multiple area's are not splitted.
It would be nice if this data could be in the same call, but a seperate api call is also fine by me if it will not be possible.