Identity 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 P(CR) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 RDP16s V4 genus family order class phylum