 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 NI  -SL     -7.155 -176.070  3.1889
  
 covariance matrix (rad2/m.y.2 e-10
    5153.9      63.7     103.3
      63.7    5517.6     -47.6
     103.3     -47.6    5282.1
  
