(a) Ecliptic latitude dependence of DIRBE 100 μm data after subtraction of IPD emission. Data at δ > −40° are averaged within 10° bins in ecliptic latitude and the following bins in H I column density: N(H I)/10²⁰ cm⁻² from 1.3 to 1.5 (diamonds), 1.5 to 1.7 (crosses), 1.7 to 1.9 (triangles), and 1.9 to 2.1 (squares). (b) The data averaged within 10° bins in Galactic latitude and the same bins in H I column density. (c) The data averaged within 20° bins in Galactic longitude and the same bins in H I column density.