 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 BH  -sw      5.642  128.867  1.6901
  
 covariance matrix (rad2/m.y.2 e-10
  136573.0  -65936.1 -228022.7
  -65936.1   42796.1  116392.0
 -228022.7  116392.0  409010.8
  
