 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 sc  -ar    -41.798 -169.321  0.5475
  
 covariance matrix (rad2/m.y.2 e-10
     437.5    -138.8    -623.6
    -138.8     771.0    1227.7
    -623.6    1227.7    3860.3
  
