 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 AS  -NB     52.942  -51.223  0.8109
  
 covariance matrix (rad2/m.y.2 e-10
    3265.7      81.0     -18.7
      81.0    3619.3      76.3
     -18.7      76.3    3337.5
  
