 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 sa  -nb    -60.948  141.002  0.2950
  
 covariance matrix (rad2/m.y.2 e-10
      16.4      -6.3       0.4
      -6.3       6.7      -3.7
       0.4      -3.7      31.9
  
