Frequency distribution of phenotype groups based on the dendrogram generated from qualitative data (presence/absence of inhibition zone) of antibiotic interactions between Merzouga sand Actinobacteria isolates and four tested microorganisms: S. aureus CCMM/B804 (S.a), L. monocytogenes CCMM/B806 (L.m), S. enterica subsp. enterica CCMM/B801 (S.e) and yeast (C. albicans CCMM/L60) (C.a).