 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 ri  -lw     18.087 -108.788  4.3318
  
 covariance matrix (rad2/m.y.2 e-10
   23969.3   77928.9  -28712.8
   77928.9  257724.2  -94089.0
  -28712.8  -94089.0   35730.0
  
