 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 nz  -eu     44.923  -98.682  0.4740
  
 covariance matrix (rad2/m.y.2 e-10
     166.4      59.3    -140.6
      59.3     369.6    -144.5
    -140.6    -144.5     635.5
  
