 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 sa  -xx    -22.618 -112.833  0.1090
  
 covariance matrix (rad2/m.y.2 e-10
      41.7       0.3     -26.2
       0.3      62.0      50.0
     -26.2      50.0     102.1
  
