Average spectrum and LIME explanation weights for clusters 0, 5, 4, and 6 from the top 1% most anomalous spectra (MSE score). Clusters 0 and 5 (top rows) show diffuse or noisy explanations with low weights, which is consistent with poor continuum reconstructions or spikes. Clusters 4 and 6 (bottom rows) feature strong weights at truncated [OIII] λ500.7 lines due to masked regions during preprocessing. This illustrates how explanation-based clustering isolates artifacts from astrophysical signals. The fluxes are median normalized.