This Rdata object is a “list of list” organised as: [outer competitor interaction strength][within loop competition strength]. [Outer competitor interaction strength list] contains 12 elements, where the first 11 elements contain competition matrices where the fitness differences between the outer competitor and a species of the intransitive loop range from ca. 3 to 1, and a last element with fitness difference of 0 (i.e., no outer competitor impacts the loops). Each [within loop competition strength list] contains 11 species by species matrices where species pairwise fitness differences range from ca. 3 to 1.