rownames,Name,Longitude,Year,Longname,City,Country,Latitude,Source,Gap
1,G. Jansonius,17.736,1605,Jan Jansson,Amsterdam,Flanders,52.373056,Map,0
2,G. Mercator,19.872,1567,Gerardus Mercator,Leuven,Flanders,50.883333,Map,0
3,I. Schonerus,20.638,1536,Johann Schoner,Bamberg,Germany,49.891667,Astron,0
4,P. Lantsbergius,21.106,1530,Phillip van Lansberge,Middelburg,Belgium,51.5,Astron,0
5,T. Brahe,21.447,1578,Tycho Brahe,Hven,Denmark,55.866667,Astron,0
6,I. Regiomontanus,25.617,1463,Johann Muller,Nuremberg,Germany,49.45,Astron,1
7,Orontius,26,1542,Oronce Fine,Paris,France,48.866667,Astron,1
8,C. Clavius,26.34,1567,Christoph Clavius,Rome,Italy,41.9,Astron,1
9,C. Ptolomeus,27.787,150,Claudius Ptolemaeus,Alexandria,Egypt,31.1980556,Astron,1
10,A. Argelius,28.17,1610,Andrea Argoli,Padua,Italy ,45.4166667,Astron,1
11,A. Maginus,29.787,1582,Giovanni Antonio Magini,Bologna,Italy,44.4833333,Astron,1
12,D. Origanus,30.128,1601,David Origanus,Frankfurt,Germany,52.3471,Astron,1