The statistical analysis of the data was carried out by using the statistical software "R" The R Project for Statistical Computing: www.r-project.org.
El análisis estadístico de los datos fue hecho con el software de estadística "R" The R Project for Statistical Computing: www.r-project.org.
A análise estatística dos dados foi feita com o software de estatística "R" The R Project for Statistical Computing: www.r-project.org.