Period spacings in red giants - IV. Toward a complete description of the mixed-mode pattern B. Mosser, C. Gehan, K. Belkacem, R. Samadi, E. Michel and M.-J. Goupil A&A, 618 (2018) A109 Published online: 22 October 2018 DOI: 10.1051/0004-6361/201832777