 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 BS  -nb     -5.993  120.902  2.6830
  
 covariance matrix (rad2/m.y.2 e-10
    1850.6    -222.0     -13.5
    -222.0    3084.8     179.2
     -13.5     179.2    2049.3
  
