line offset:	2441.1336	14150.3782	20629.4167	3076.6347
line slope:	 881.9207	 572.8751	 512.3252	1706.7076
slope ratio:	   1.5395	   0.3002
subtract ped line offset:	-8301.6154	-16516.3541	-10406.7012	-7682.8474
subtract ped line slope:	 881.9207	 572.8751	 512.3252	1706.7076
slope ratio:	   1.5395	   0.3002
offset:	-8301.6154	-16516.3541	-10406.7012	-7682.8474
x a,b,c:	   0.6945	   1.0420	  -0.0160
y a,b,c:	  -0.0803	   1.1371	  -0.1152
fval:	   0.3729	   0.3184
x err:	   0.2709	   0.1463	   0.2280
y err:	   0.2772	   0.1913	   0.2006