Example of antenna-based ΔTEC screens from the dusk ionosphere simulation. Each plot shows the simulated ground truth (noise-free) ΔTEC for each geodesic originating from that station with axes given in direction components k_x and k_y. The inset label gives how far the antenna is from the reference antenna. Antennae further from the reference antenna tend to have a larger magnitude ΔTEC as expected. Each plot box bounds a circular 12.6 deg² field of view.