 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 co  -na     31.104 -133.203  1.0845
  
 covariance matrix (rad2/m.y.2 e-10
     973.6     -24.7    -876.3
     -24.7     995.6    -132.2
    -876.3    -132.2    1104.7
  
