 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 ON  -sw     33.987  139.822  3.8930
  
 covariance matrix (rad2/m.y.2 e-10
  132293.8  -66015.8 -228071.7
  -66015.8   38642.3  116493.8
 -228071.7  116493.8  404758.4
  
