For the analysis the program Geostatistics for the Environmental Sciences GS+ version 7.0, was used to generate semivariograms.
Para el análisis se utilizó el programa Geostatistics for the Environmental Sciences GS+, versión 7.0, para generar los semivariogramas.
Para a análise utilizou-se o programa Geostatistics for the Environmental Sciences GS+, versão 7.0, para gerar os semivariogramas.