 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 sm  -an     12.686  -60.917  0.1473
  
 covariance matrix (rad2/m.y.2 e-10
      42.6      40.6     -27.0
      40.6     116.3     -40.3
     -27.0     -40.3      55.8
  
