 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 ar  -ca     31.673   25.615  0.4876
  
 covariance matrix (rad2/m.y.2 e-10
     329.0      37.9     146.4
      37.9     603.5      21.1
     146.4      21.1     241.5
  
