 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 PM  -na     50.668 -163.549  0.2361
  
 covariance matrix (rad2/m.y.2 e-10
    1914.7    -114.5     -42.7
    -114.5    3303.5     209.0
     -42.7     209.0    2146.7
  
