Altitude in meters x 10
Figure 6-4: Potentials (0(0, 0, z), 9.6 km < z < 10.4 km) near the positive charge
(10 km) in two domains, Q1 and Q2
x-axis in meters
2.5
x 10'
Figure 6-5: Potentials (O(x, 0, 5) and (x, 0, 10),
x-axis at the altitude 5 km and 10 km
-25 km < x
< 25 km) along the