 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 an  -ar    -25.055 -174.810  0.4572
  
 covariance matrix (rad2/m.y.2 e-10
     259.4     173.2      89.8
     173.2     310.3      81.6
      89.8      81.6     106.8
  
