Where I can find sample data like Satellite Coordinates ECEF,pseudorange,time? I want to do some task for students [QUOTE]Sat. # time(min) Xs Ys Zs pseudorange (m) (microsec.)(1e-6) 1 0 17104.3 -5228.5 19811.5 23399263.4 292.4[/QUOTE] ETC.