Average emissivity spectra in five bins of temperature and their 1-σ uncertainty: 16 K in red (solid), 20 K in dark blue (dash), 24 K in light blue (dot), 28 K in green (dash-dot), and 32 K in orange (dash-dot-dot). The emissivities have been computed using the best-fit with the TLS model (top panel) and with a modified black body with β = 2 (bottom panel). An emissivity power-law in λ^-2 is overplotted as a continuous gray line, for comparison.