Daou, I. E.; Harouna, S.; Hassan, A. M.; Oumarou, R. H.; Dan-Badjo, A. T.; Chékaraou, M. M. S. Assessment of Atmospheric Pollutants Concentrations by Using Multivariate Statistical Analysis: A Case Study of Commune 5 of Niamey City, Niger. EJGEO 2022, 3, 60-68.