The same 41 findspots the box plot draws, on a map, shaded by any of the four colour axes the graph publishes. The colours are not chosen here: each axis carries its ramp, its interpolation and its normalisation domain in the graph itself, so every colour on this map can be recomputed from the data behind it.

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34 discovery sites, 41 dated findspots. One marker per site: the source records a single coordinate per site, so findspots at the same site share a position and are listed together in the popup. The marker takes the median of its findspots' values. The underlying file is map.geojson — plain GeoJSON, usable in QGIS or anything else that reads it.

The query this map was built from 
SELECT ?site ?findspot ?wkt ?from ?to ?axis ?norm ?colour WHERE {
  VALUES (?axis ?normProp ?hexProp) {
    ("qInterval"    lado:normQInterval    lado:hexQInterval)
    ("midpointYear" lado:normMidpointYear lado:hexMidpointYear)
    ("sigmaYears"   lado:normSigmaYears   lado:hexSigmaYears)
    ("nStamps"      lado:normNStamps      lado:hexNStamps)
  }
  ?fs a lado:Findspot ; rdfs:label ?findspot ;
      crm:P89_falls_within ?p ; crm:P4_has_time-span ?ts .
  ?p rdfs:label ?site ; geo:hasGeometry/geo:asWKT ?wkt .
  ?ts time:hasBeginning/time:inTimePosition/time:numericPosition ?from ;
      time:hasEnd/time:inTimePosition/time:numericPosition ?to .
  ?row lado:renders ?ts ; ?normProp ?norm ; ?hexProp ?colour .
}
ORDER BY ?site ?findspot ?axis

It ran once, when the site was built, and its result became the GeoJSON above. To change it and see the answer, run it on the query page, where the graph is parsed in your browser.