line offset:	1276.6285	2705.1907	8041.9968	5071.2924
line slope:	1151.6817	1152.6366	1269.7180	1427.1817
slope ratio:	   0.9992	   0.8897
subtract ped line offset:	-11684.2780	-7614.2710	-20437.6801	-15822.4007
subtract ped line slope:	1151.3970	1152.6925	1267.7387	1426.6146
slope ratio:	   0.9989	   0.8897
offset:	-11710.1804	-7612.3864	-20603.0819	-15870.2755
x a,b,c:	  -0.0638	  -1.0755	   0.0458
y a,b,c:	   0.0178	   1.2020	   0.0570
fval:	   0.1687	   0.1376
x err:	   0.2759	   0.1578	   0.2263
y err:	   0.2381	   0.1922	   0.1406