Isotopic ratios of the individual spectra. On the left axis, the unitless ³⁴S/³²S ratio is shown, and the right axis represents the corresponding deviation from the V-CDT standard in per mille. Note that the y-axis in the top panel is compressed to one-tenth of the scale used in the remaining panels. The solid line and shaded region represent the weighted mean and its corresponding 1σ statistical error band. The uncertainties of the individual data points shown here only include statistical uncertainties.