*Vertices 4
1 "BusHist" 0.0 0.0 0.0 x_fact 5.836576 y_fact 10.894942
2 "EconHistRev" 0.0 0.0 0.0 x_fact 21.595331 y_fact 43.774319
3 "ExplorEconHist" 0.0 0.0 0.0 x_fact 12.840467 y_fact 17.704280
4 "JEconHist" 0.0 0.0 0.0 x_fact 11.478599 y_fact 27.626459
*Matrix 
0.000000 0.760365 0.412797 0.457630 
0.760365 0.000000 0.701789 0.753574 
0.412797 0.701789 0.000000 0.984993 
0.457630 0.753574 0.984993 0.000000