 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 ar  -in      3.241  -63.367  0.0385
  
 covariance matrix (rad2/m.y.2 e-10
     195.8     273.1     108.7
     273.1     486.8     169.1
     108.7     169.1      68.2
  
