 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 gps_-expl   50.365 -126.857 -3.0038

 covariance matrix (rad2/m.y.2 e-10
       1.        1.        1. 
       1.        1.        1. 
       1.        1.        1. 

