A SARIMA and Adjusted SARIMA Models in a Seasonal Nonstationary Time Series; Evidence of Enugu Monthly Rainfall. European Journal of Mathematics and Statistics, [S. l.], v. 2, n. 1, p. 13–18, 2021. DOI: 10.24018/ejmath.2021.2.1.15. Disponível em: https://ej-math.org/index.php/ejmath/article/view/15. Acesso em: 6 nov. 2025.