 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 sa  -co    -31.087   54.509  1.1320
  
 covariance matrix (rad2/m.y.2 e-10
     817.1      92.2    -867.4
      92.2     985.4    -211.6
    -867.4    -211.6    1124.7
  
