 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 AT  -nb     30.346   38.389  1.1163
  
 covariance matrix (rad2/m.y.2 e-10
    1833.2     130.1     -82.0
     130.1    2653.3     125.1
     -82.0     125.1    2020.0
  
