 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 BU  -ar    -17.293  -87.469  2.2164
  
 covariance matrix (rad2/m.y.2 e-10
    1997.0     -29.9     161.3
     -29.9    3552.4     214.4
     161.3     214.4    2038.1
  
