 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 NH  -xx      0.568   -6.602  2.4688
  
 covariance matrix (rad2/m.y.2 e-10
    1582.4      30.5      -3.0
      30.5    1779.0       7.3
      -3.0       7.3    1607.1
  
