a=cat,b=pan,i=1,x=0.5117389009583777,y=0.08295224980036853,x2=0.2618767027540883,xy=0.0424498931448654,y2=0.006881075746942741
a=pan,b=wye,i=2,x=0.5225940442098578,y=0.511678736087022,x2=0.27310453504361476,xy=0.2674002600279053,y2=0.26181512896361225
Final NR is 3
