548920.fig.002a
(a)
548920.fig.002b
(b)
548920.fig.002c
(c)
548920.fig.002d
(d)
548920.fig.002e
(e)
548920.fig.002f
(f)
548920.fig.002g
(g)
548920.fig.002h
(h)
548920.fig.002i
(i)
Figure 2: The graph of as .