public Point[] FindPointsWithinCircleForUnit(
	long unitId,
	LatLon latLon,
	double radius,
	DateTime startTime,
	DateTime endTime
)

Public Function FindPointsWithinCircleForUnit ( 
	unitId As Long,
	latLon As LatLon,
	radius As Double,
	startTime As DateTime,
	endTime As DateTime
) As Point()

long uid = 115327034;
LatLon ll = new LatLon(33.58135,-117.7269);
double rad = 1;
DateTime start = DateTime.Parse("2008-12-20");
DateTime end = start.AddHours(6);
Point[] points = service.FindPointsWithinCircleForUnit(uid, ll, rad, start, end);
foreach (Point p in points) {
    Console.WriteLine("{0}:{1}", p.Timestamp, p.Status);
}