line offset:	3760.0615	9655.8667	21596.1228	4853.8866
line slope:	 560.0457	1457.2039	 699.2532	 779.4117
slope ratio:	   0.3843	   0.8972
subtract ped line offset:	-7003.3725	-20987.5539	-9506.6450	-5874.7703
subtract ped line slope:	 560.0457	1457.2039	 699.2532	 779.4117
slope ratio:	   0.3843	   0.8972
offset:	-7003.3725	-20987.5539	-9506.6450	-5874.7703
x a,b,c:	   1.3435	   0.9364	   0.1355
y a,b,c:	   1.7050	   1.1862	  -0.0279
fval:	   1.0688	   0.2579
x err:	   0.1198	   0.1109	   0.0453
y err:	   0.2128	   0.1763	   0.1193