Click the map, or enter a coordinate, for each mark you plan to observe. The planner gives each mark's distance to the nearest Sabah CORS and the case the network falls in. The shaded rings are 10 km around each CORS: inside them is Case A. ▲ CORS held as control · ▲ CORS not held at present (no ring) · a ?p=lat,lon&p=... link opens with those marks.