 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 am  -an     50.082 -138.471  0.0494
  
 covariance matrix (rad2/m.y.2 e-10
     344.7      49.6     -71.9
      49.6     477.5     324.7
     -71.9     324.7     503.9
  
