 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 nz  -pa     55.857  -87.762  1.3113
  
 covariance matrix (rad2/m.y.2 e-10
     111.4     289.4    -127.3
     289.4    1334.7    -483.9
    -127.3    -483.9     305.7
  
