. 2016 Sep-Oct;24(5):447–452. doi: 10.1590/1678-775720150561

Table 2. Weibull parameters (Weibull modulus, m; characteristic strength, σ₀), flexural strength at 5% failure probability (σ5%), and their respective 95% confidence intervals in brackets. Groups with similar superscript letter are not statistically different (p<0.05).

Group	m	σ(MPa)	σ5% (MPa)
Z0	9.6 (7.0 – 13.0)^b	210.4 (201.4 – 219.6)^a	154.7 (137.8– 167.7)
CM	11.7 (8.5 – 15.8)^b	209.0 (201.5 – 216.5)^a	163.2 (147.4 – 173.4)
LU	14.5 (10.6 – 19.5)^b	218.1 (211.9 – 224.2)^a	177.9 (165.0 – 187.4)
VE	19.5 (14.1 – 26.4)^a	126.5 (123.8 – 129.2)^b	108.7 (102.6 – 113.1)

Table 2. Weibull parameters (Weibull modulus, m; characteristic strength, σ0), flexural strength at 5% failure probability (σ5%), and their respective 95% confidence intervals in brackets. Groups with similar superscript letter are not statistically different (p<0.05).