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NMR PCA loadings with uncertainty. The uncertainty is drawn so that, if it obscures the NMR signal, the corresponding loading is not visible. Note that uncertainty is drawn as a symmetric interval around 0. There may appear to be a nonzero uncertainty in the solvent suppression region because uncertainty in the bins on either side may not be zero and there is no data in the suppression region; this apparent uncertainty is an artifact and should be ignored.
