Table 3.
Proportional limit stress of each province (N/mm2)

Province Goseong-gun Hongcheon-gun Bonghwa-gun

Position
Juvenile wood 21.77 ± 1.18* 18.96 ± 1.75 A 20.17 ± 3.39 A
Heartwood 16.13 ± 3.37 c 19.76 ± 0.82 b 27.86 ± 2.54 a
Sapwood 13.72 ± 1.85 β 17.10 ± 2.73 β 27.19 ± 2.14 α
Duncan's, significance level: 0.05, ±: standard deviation. Juvenilewood = Capital letter, Heartwood = Small letter, Sapwood = Greek.