 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 PM  -an    -20.455 -111.293  0.1785
  
 covariance matrix (rad2/m.y.2 e-10
    1832.0      27.5       1.7
      27.5    3027.5      67.3
       1.7      67.3    1977.2
  
