 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 sa  -sw     28.807  147.963  1.3233
  
 covariance matrix (rad2/m.y.2 e-10
  130504.5  -65500.6 -227921.3
  -65500.6   35682.6  116204.8
 -227921.3  116204.8  402734.7
  
