line offset:	2778.8109	13869.1495	18263.3320	4098.1193
line slope:	 914.2422	 778.9823	 968.4842	 883.4291
slope ratio:	   1.1736	   1.0963
subtract ped line offset:	-7876.6066	-16374.8969	-13327.1411	-6664.1702
subtract ped line slope:	 915.1489	 781.6600	 965.7889	 883.3014
slope ratio:	   1.1708	   1.0963
offset:	-7809.6219	-16173.6204	-13513.0378	-6672.9432
x a,b,c:	   0.3003	   1.0535	  -0.0025
y a,b,c:	   0.0471	   1.1360	  -0.1167
fval:	   0.3275	   0.3459
x err:	   0.2572	   0.1739	   0.1895
y err:	   0.2524	   0.2048	   0.1475