 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 xx  -ar    -48.881  171.509  0.5588
  
 covariance matrix (rad2/m.y.2 e-10
     208.2     182.4     112.2
     182.4     397.7     104.1
     112.2     104.1      87.3
  
