 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 GP  -ca      0.773   81.434  5.7146
  
 covariance matrix (rad2/m.y.2 e-10
    1861.6     178.0    -134.2
     178.0    3933.9    -426.1
    -134.2    -426.1    2177.4
  
