 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 NI  -co    -14.920  168.156  2.8454
  
 covariance matrix (rad2/m.y.2 e-10
    4404.6     628.4    -553.3
     628.4    5032.3    -802.7
    -553.3    -802.7    4223.2
  
