 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 GP  -NB      9.470   76.232  5.1538
  
 covariance matrix (rad2/m.y.2 e-10
    3191.2     289.4    -127.3
     289.4    4414.5    -483.9
    -127.3    -483.9    3385.5
  
