Left panel: Colormap of the SHAP values for each channel and each ζ^1e4 value in the test set. The numbers indicate the average of the SHAP value in the given part of the plot. The numbers with bounding boxes have an absolute value larger than 0.03. Right panels: Spectra corresponding to the model at the ζ^1e4 value indicated by the arrow (and reported in the upper left part of each panel). For the sake of clarity, the temperature is normalized to the maximum of each transition (similarly to the NN input data normalization). Each color corresponds to a different molecular transition, as labeled at the top. The labels also indicate the correspondence between the channels in the left and right panels.