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Substitution rates (substitutions/site/year) across the (a) 31 NRRs for the SARS-CoV-1-like viruses and (b) 27 NRRs for the SARS-CoV-2-like viruses. The dashed line in each panel is the respective median substitution rate. The dots and thick lines within the violins indicate the median and interquartile range.
