$\beta$

$l_t$

$\Delta E\left(4\right)$

$\Delta E\left(8\right)$

12

120

2.12 ± 0.07

6.83 ± 0.06

12

144

2.26 ± 0.08

6.95 ± 0.08

14.4

144

2.00 ± 0.06

6.88 ± 0.07

14.4

180

2.17 ± 0.07

6.93 ± 0.07

16

160

2.04 ± 0.06

6.82 ± 0.07

16

180

2.03 ± 0.08

6.83 ± 0.06

16

200

2.06 ± 0.06

6.87 ± 0.06