Completeness limits L_IR for detecting all SED shapes. The upper, middle, and bottom panels show the complete limits for H-ATLAS, COSMOS, and GOODS-N surveys, respectively. In each panel, the galaxies of our high-z sample are plotted as diamonds (L_IR from Table 1), and the L_IR for each SED template is plotted in colored line (red: B13; yellow: DH02 with α = 2.5; green: C14; blue: CE01 with L_IR = 10⁹L_⊙; magenta: MBB with T = 40 K). The black line is the maximum of the colored lines, above which the observation should not be biased against these SEDs.