Table 1: Values of and the means of OP and PS.

Specimen #OP (cm)PS (cm)Θ (deg)

52.71.41.3
63.02.01.9
73.431.590.18
84.362.020.63
93.782.131.48
105.642.440.83
114.191.812.18
124.693.190
132.671.471.4
1410.94 4.672.2
154.872.781.38
173.813.422.33