  The preceding theory of excluded volume effects is applied to the Daud and
coworkers' observations. Based on various researchers' experimental data, it is
suggested that the Daud and coworkers' value in the bulk state may be revised
from 82 \AA to 93\AA. Then agreement between the theory and the revised data is
excellent, giving a support to the preceding result that the excluded volume
effects should vanish at medium concentration.
