 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 NH  -ON    -18.871  -22.649  4.5514
  
 covariance matrix (rad2/m.y.2 e-10
    3243.9    -155.0      45.6
    -155.0    3386.5      44.8
      45.6      44.8    3375.2
  
