We identified a typographical error in Equation (1) in Methods.In the published version, the squared deviation term was inadvertently omitted.The correct expression for the chi-squared metric is:We confirm that all values reported in the manuscript and Supplementary Information were computed using the correct expression, including the squared deviation term.Therefore, this correction does not affect any numerical results, comparisons, or conclusions.In addition, we have made a minor terminology clarification in the Ala 5 section by replacing "Ala 5 3 J couplings" with "Ala 5 scalar couplings" to reflect that the values include a combination of 1 J, 2 J, and 3 J couplings (as detailed in Supplementary Table 6).This wording change is for consistency and clarity only and does not affect the interpretation of the data.
Phan et al. (Fri,) studied this question.