 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 PM  -sr     50.963 -115.197  0.2866
  
 covariance matrix (rad2/m.y.2 e-10
    3383.6    -147.5   -2216.3
    -147.5    3113.7     457.8
   -2216.3     457.8    5313.7
  
