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Rayleigh plots (a, b) for the B12− (blue) and B12+ (red) subcultures (from Phillips et al. [2022]) for carbon (a) and chlorine (b) and dual‐isotope plots (c, d) for B12− (c) and B12+ (d). Shading represents 95% confidence interval of the slope (see text for details). The mean square of weighted deviations and the associated p‐value are shown for dual‐isotope plots, regressed using York regression, to assess model fit (detailed discussion provided in Ojeda et al. [2021]).
