PACS 100 μm images of the 7 detected galaxies superimposed as contours on the Spitzer/IRAC 3.6 μm images shown with false colors (for the host of GRB 980613, the IRAC 4.5 μm is plotted). The (0, 0) position corresponds to the coordinates given in Table 1. The slight vertical offsets in the various panels result from inability to perfectly center the IRAC images because of the integer pixels. The PACS 100 μm beam size is shown in the upper left corner of the left-most panel in each row. PACS contours start at 3σ and run to 4.5σ (980613), 30σ (020819B), 7σ (051022), 6σ (070306), 6σ (080207), 3.5σ (080325), and 5σ (090417B). These σ values per pixel correspond to the correlated noise measured from the images, which are roughly 4 times smaller than the true noise (see PACS documentation and text). A + marks the nominal GRBH position (see Table 1). The detection of the host of GRB 080325 is only marginal, significant at ~2.5σ. For display purposes, the PACS images have been rebinned to smaller pixel sizes.