 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 GP  -PM      0.769   80.478  5.7439
  
 covariance matrix (rad2/m.y.2 e-10
    3401.5     178.0    -134.2
     178.0    5473.8    -426.1
    -134.2    -426.1    3717.3
  
