 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 lw  -nb     22.989  120.828  0.0225
  
 covariance matrix (rad2/m.y.2 e-10
     365.5     263.7    -458.3
     263.7     219.5    -334.2
    -458.3    -334.2     614.3
  
