Evaluation of daily tropospheric radio refractivity, refractivity gradient and geoclimatic factor over Otukpo, Benue State, Nigeria. African Scientific Reports, [S. l.], v. 5, n. 3, p. 561, 2026. DOI: 10.46481/asr.2026.5.3.561. Disponível em: https://www.asr.nsps.org.ng/index.php/asr/article/view/561. Acesso em: 12 sep. 2026.