К

6

9

16

25

Leaning

in the corners

$\varpi$

10.9082

${\varpi }_K$

13.8061

-

11.6074

11.5811

${\delta }_1\%$

20.1833

-

6.9229

5.7265

Leaning

in the center

$\varpi$

6.7806

${\varpi }_K$

-

7.2712

7.2397

6.8214

${\delta }_1\%$

-

7.212

6.7030

0.6573