 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 BU  -xx     -6.125  -78.101  2.2287
  
 covariance matrix (rad2/m.y.2 e-10
    1776.3    -243.4      39.9
    -243.4    2750.2     136.0
      39.9     136.0    1877.3
  
