Estimation of Clearness Index and its Application in Determining Sky Conditions using Three Cities in Ghana as a Case Study. Indian Journal of Environment Engineering (IJEE), [S. l.], v. 2, n. 1, p. 9–18, 2024. DOI: 10.54105/ijee.C1822.051322. Disponível em: https://www.journals.latticescipub.com/index.php/ijee/article/view/339.. Acesso em: 2 may. 2025.