(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
(j)
(k)
(l)
(m)
(n)
(o)
(p)
(q)
(r)
Figure 2: Estimated at different heights; 36 curves are overlaid. (a)–(f) are the estimated at the height of 30 cm for the x-polarized, y-polarized, and z-polarized probes, respectively; (g)–(l) are the estimated at the height of 62 cm for the x-polarized, y-polarized, and z-polarized probes, respectively; (m)–(r) are the estimated at the height of 98 cm for the x-polarized, y-polarized, and z-polarized probes, respectively.