Fig. 2(b): A-t1/t plot, t1/t,A 0.1,0.001304768 0.2,0.001542922 0.3,0.001850713 0.4,0.002382209 0.5,0.004024404 0.54,0.006618251 0.58,0.010338823 0.6,0.01108226 0.64,0.011313425