Snapshot of a simulated turbulent TEC-screen with the parameters β = 3.89 and h_iono = 250 km. Each circle marks one pierce-point, circles of the same color show pierce-points for different directions belonging to the same station. Only pierce-points belonging to one of the centermost stations (CS001), the most distant central station (CS501) as well as the three outermost remote stations (RS210, RS310, RS509) are displayed.