Table 10. Appropriate area based on the root diameter measurement
Division
Total
No.1 area (4∼6㎝)
No.2 area (2∼4㎝)
No.3 area (0㎝)
No.4 area (-2∼-4㎝)
No.5 area (-4∼-6㎝)
Etc
Frequency (persons)
191
27
51
49
49
14
1
Ratio (%)
100
14.1
26.7
25.7
25.7
7.3
0.5