Coordinates, interval and colour for each findspot. The point sits on the discovery site rather than the findspot, because that is where the source records it — the four Bregenz contexts share one coordinate, and a map that wants them apart has to spread them itself rather than pretend the data distinguishes them. The colour is presentation and is published as such, on the plot row alongside the other "visual only" quantities, never on the time-span.
?wkt column of the result
Also available as a plain file:
map-layer.rq.
The graph is fetched as a static file and queried in your browser with
rdflib under Pyodide — there is no endpoint, and nothing you type
leaves your machine.