Distribution of relative errors between the LSTM-predicted and the target AEM signals for the entire 4000-sample test set at all sampling points. The red shading shows the percentage of the relative error within uniform bins of 1 per cent width at each sampling point. The plus signs represent the mean values of the relative errors. The dotted lines define the 75 per cent quantile of the relative errors, while the dash lines define the 95 per cent quantile.