to estimate the conductivity is that Figure 3-3 demonstrates a more completed
conductivity data than Figure 9.6 in [27].
Table A-2: Thirteen points chosen from Figure 3-3
Point Height
(km)
P1 4.5
P2 12.5
P3 26
P4 40
P5 48
P6 52.5
P7 60
PA 70
P9 78.5
Pio 85
PI1 89
P12 95
P13 100
loglo (conductivity)
(S/m)
A quartic polynomial is found to
conductivity function is estimated by
approximate those points in Table 2. The
a = 10p(z)
where p(z) is the quartic polynomial
p(z) = -13.16 + 0.06351z + 0.0008682z2 0.000008674z3
+0.00000005781z4,
where the altitude z is measured in kilometers, and its graph is shown in Figure
A-2.