Same as Fig. 7, but with two adjacent bands separated out in each case. Compared to the cases with one single band, more information can generally be provided by two bands, in particular 𝑔-band and r-band images that have the strongest synergistic effect. The behaviors of data imbalance are revealed in the stack plots that are illustrated for separating out both the 𝑔 and r bands, or both the W1 and W2 bands.