“…Weibull modulus, m (dimensionless), corresponds to the distribution of flaws within the specimen and the homogeneity of their distribution increased with m. The characteristic stress σ 0 is an experimentally obtained parameter that corresponds to a proportion of fractured samples of (1-1/e) = 63% (cumulative failure probability). In this study, the characteristic values of the ossicles of each species has been compared according to the stations by using the 95% confidence intervals (CI 95) with the modified least square regression of Bütikofer et al (2015) and following the methods described by Di Giglio et al (2020a).…”