 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 sr  -BH     33.433  -83.462  0.8273
  
 covariance matrix (rad2/m.y.2 e-10
    7616.7    -111.3   -2114.8
    -111.3    6514.9     343.0
   -2114.8     343.0    9529.7
  
