Signal-to-noise ratio (S/N) distribution for I_E, Y_E, and H_E channels in the ultracool catalogue. The median S/N values are 10, 24, and 37, respectively. Dashed lines are distributions for the entire catalogue of ultracool candidates. Solid lines trace the variation of the S/N distribution with the I_E − Y_E colour. In NISP, redder (cooler) objects tend to have higher S/N on average, while in the VIS band, the opposite is true and the difference between the red and blue is more pronounced.