（厘米2）
（公斤/米）
（米2/米）
6
7
8
10
9.397
10.860
12.303
15.126
7.376
8.525
9.658
11.874
0.314
0.313
12
12.301
13.944
17.167
20.306
9.656
10.946
13.476
15.940
0.354
0.353
0.352
13.796
15.638
19.261
10.830
12.276
15.120
0.393
0.392
14
16
26.256
29.627
20.611
23.257
0.391
0.390
17.238
21.261
25.200
29.056
13.532
16.690
19.782
22.809
0.433
0.432
0.431
19.133
22.696
26.193
0.491
0.490
32.512
37.567
42.539
25.522
29.490
33.393
0.551
0.550
0.549
37.441
43.296
49.067
29.391
33.987
38.518
0.630
0.629
18
48.896
55.467
61.955
38.383
43.542
48.634
0.709
0.708
20
24
62.013
69.301
76.505
90.661
48.680
54.401
60.056
71.168
0.788
0.787
0.785
