Maps and histograms of the residuals of the properties of the ¹³CO (1−0) line. The properties are the same as for Fig. 20. The first, second, and third columns show the maps of residuals between the autoencoder denoised and raw data, the ROHSA denoised and raw data, and the ROHSA and autoencoder denoised data, respectively. The color scales are saturated in order to emphasize the differences where some signal is detected. The fourth column shows the associated histograms. The brown and green lines show the residuals from the autoencoder and ROHSA denoising, respectively. The black lines show the difference between the autoencoder and ROHSA results.