 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 co  -xx     26.935 -124.307  1.1978
  
 covariance matrix (rad2/m.y.2 e-10
     774.4     273.3    -616.2
     273.3    1035.6    -366.5
    -616.2    -366.5     613.1
  
