Euclidean-normalized number counts for the Herschel-SPIRE Dark Field at 250 μm (top left), 350 μm (top right) and 500 μm (bottom), extracted using XID+ with Spitzer-MIPS 24 μm positional priors (dark orange). The green dashed vertical line represents the 1σ confusion limit in each band. Model counts from SIDES+uchuu (A. Gkogkou et al. 2023) and the P(D) fluctuation analysis of T. W. O. Varnish et al. (2025) are shown for comparison, alongside published literature counts from SUSSEXtractor blind extraction and non-Bayesian XID cross-identification (C. Pearson et al. 2025), HerMES (S. J. Oliver et al. 2010), HerMES with MIPS 24 μm stacking (M. Béthermin et al. 2012), and H-ATLAS (D. L. Clements et al. 2010). Shaded regions indicate 1σ uncertainties. These normalized number counts and the far-infrared catalog are included in machine readable format as the data behind the figure.

(The data used to create this figure are available in the online article.)

(The data used to create this figure are available.)