 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 AT  -ar     28.534   45.353  0.7514
  
 covariance matrix (rad2/m.y.2 e-10
    1979.7     322.2      92.8
     322.2    3121.0     160.2
      92.8     160.2    2008.9
  
