 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 BU  -OK     -9.899  -76.730  2.0555
  
 covariance matrix (rad2/m.y.2 e-10
    3447.6    -274.2      14.0
    -274.2    4755.1     281.6
      14.0     281.6    3641.7
  
