 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 co  -in      5.515 -137.719  1.2875
  
 covariance matrix (rad2/m.y.2 e-10
     950.7     100.2    -591.7
     100.2    1315.6     -52.5
    -591.7     -52.5     633.1
  
