 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 ar  -yz     15.758   10.631  0.4559
  
 covariance matrix (rad2/m.y.2 e-10
     361.9     317.7     107.9
     317.7     889.4     247.9
     107.9     247.9     281.2
  
