 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 yz  -pa     65.455  -82.385  0.9675
  
 covariance matrix (rad2/m.y.2 e-10
     164.1    -155.0      45.6
    -155.0     306.7      44.8
      45.6      44.8     295.4
  
