Comparison between three IRIS datasets representing quiet sun and network regions. The first dataset "IRIS QS 1" (panels a–d) is the same as the one shown in main text. Three boxes of roughly similar size as the MURaM-ChE model are shown in panel (a). The second and third dataset are shown in panels (e–h, IRIS QS 2) and panels (i–l, IRIS QS 3). Panels (a,e,i) show the LOS magnetic field strength measured by the HMI. Panels (b,f,j) show the brightness temperature T_b at the k_2v, panels (c,g,k) at the k₃ and panels (d,h,l) at the k_2r feature. Green colored pixels indicate where no feature could be detected.