 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 nb  -xx     47.676  -68.438  0.2921
  
 covariance matrix (rad2/m.y.2 e-10
      30.6      -0.4     -27.1
      -0.4      74.5      13.2
     -27.1      13.2      54.1
  
