{"Name":"G. Jansonius","Longitude":17.736,"Year":1605,"Longname":"Jan Jansson","City":"Amsterdam","Country":"Flanders","Latitude":52.37306,"Source":"Map","Gap":0}
{"Name":"G. Mercator","Longitude":19.872,"Year":1567,"Longname":"Gerardus Mercator","City":"Leuven","Country":"Flanders","Latitude":50.88333,"Source":"Map","Gap":0}
{"Name":"I. Schonerus","Longitude":20.638,"Year":1536,"Longname":"Johann Schoner","City":"Bamberg","Country":"Germany","Latitude":49.89167,"Source":"Astron","Gap":0}
{"Name":"P. Lantsbergius","Longitude":21.106,"Year":1530,"Longname":"Phillip van Lansberge","City":"Middelburg","Country":"Belgium","Latitude":51.5,"Source":"Astron","Gap":0}
{"Name":"T. Brahe","Longitude":21.447,"Year":1578,"Longname":"Tycho Brahe","City":"Hven","Country":"Denmark","Latitude":55.86667,"Source":"Astron","Gap":0}
{"Name":"I. Regiomontanus","Longitude":25.617,"Year":1463,"Longname":"Johann Muller","City":"Nuremberg","Country":"Germany","Latitude":49.45,"Source":"Astron","Gap":1}
{"Name":"Orontius","Longitude":26,"Year":1542,"Longname":"Oronce Fine","City":"Paris","Country":"France","Latitude":48.86667,"Source":"Astron","Gap":1}
{"Name":"C. Clavius","Longitude":26.34,"Year":1567,"Longname":"Christoph Clavius","City":"Rome","Country":"Italy","Latitude":41.9,"Source":"Astron","Gap":1}
{"Name":"C. Ptolomeus","Longitude":27.787,"Year":150,"Longname":"Claudius Ptolemaeus","City":"Alexandria","Country":"Egypt","Latitude":31.19806,"Source":"Astron","Gap":1}
{"Name":"A. Argelius","Longitude":28.17,"Year":1610,"Longname":"Andrea Argoli","City":"Padua","Country":"Italy ","Latitude":45.41667,"Source":"Astron","Gap":1}
{"Name":"A. Maginus","Longitude":29.787,"Year":1582,"Longname":"Giovanni Antonio Magini","City":"Bologna","Country":"Italy","Latitude":44.48333,"Source":"Astron","Gap":1}
{"Name":"D. Origanus","Longitude":30.128,"Year":1601,"Longname":"David Origanus","City":"Frankfurt","Country":"Germany","Latitude":52.3471,"Source":"Astron","Gap":1}