This graph shows lidar data for a 15-minute period around noon on Sol 4.
Higher concentrations of dust (as shown in red and orange) move over the
lander near the end of the measurement (as seen toward the right-hand side
of the graph).
The Phoenix Mission is led by the University of Arizona, Tucson, on behalf
of NASA. Project management of the mission is by NASA's Jet Propulsion
Laboratory, Pasadena, Calif. Spacecraft development is by Lockheed Martin
Space Systems, Denver.
