 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 ri  -eu     18.838 -107.314  4.3417
  
 covariance matrix (rad2/m.y.2 e-10
   23843.4   77701.9  -28310.7
   77701.9  257488.8  -93682.1
  -28310.7  -93682.1   35593.3
  
