X(0) - X(0) :

A1 = ( 2.38, 17.8 ) Fm        R1 = (1.3, 1.85) Fm

X(minus) - X(0) :

A1 = ( 2.38, 17.3 ) Fm        R1 = (1.3, 1.85) Fm

A3 = ( 0.27, 0.48)  Fm        R3 = (2.8, 10.2) Fm

X(minus) - X(minus) :

A1 = ( -1.27, 0.62 ) Fm        R1 = ( -609, 4465) Fm