visibility to the sky is also excellent. The ground is mostly
flat, with topography deviating no more than 3.5 m above and
below the mean horizontal plane within a 100-m radius of the
antenna. Topographical slopes range from 0.7◦ to 1.7◦ (at the
2-m spatial scale), with an average of ∼1◦ within 50-m radius
around the GPS antenna. At the submeter scale, the terrain is
rugged, with exposed rocks and littered with loose cobbles.
Land cover classification is grasslands. There is a watercourse
200-m away due NE-W.