548920.fig.006a
(a)
548920.fig.006b
(b)
548920.fig.006c
(c)
548920.fig.006d
(d)
548920.fig.006e
(e)
548920.fig.006f
(f)
548920.fig.006g
(g)
548920.fig.006h
(h)
548920.fig.006i
(i)
Figure 6: The graph of as .