$B$ $C1$ $C2$ $C3$ ${\omega }_{U}$ ${\omega }_{L}$ $\left({\omega }_{U}+{\omega }_{L}\right)/2$ $C1$ 1 4 4 0.5917 0.6102 0.6010 $C2$ 1 2 0.2674 0.2791 0.2733 $C3$ 1 0.1173 0.1241 0.1207