line offset:	2270.2527	3801.1254	-1436.8484	 782.8393
line slope:	 785.1258	1583.7920	1107.6997	1653.1352
slope ratio:	   0.4957	   0.6701
subtract ped line offset:	-10775.7786	-6582.5615	-28219.7807	-20286.7215
subtract ped line slope:	 786.1493	1584.8054	1086.4189	1653.8028
slope ratio:	   0.4961	   0.6701
offset:	-10684.1465	-6491.8340	-30125.0832	-20226.9470
x a,b,c:	   0.3581	  -1.1382	   0.0387
y a,b,c:	  -0.0180	   1.1875	   0.0620
fval:	   0.2735	   0.1342
x err:	   0.2267	   0.1629	   0.1576
y err:	   0.2584	   0.2041	   0.1585