Left panel: maps of best-fit normalisation (top) and the slope (bottom) compared to the full sample for the σ_v − T relation. Note that the colour scale is different for both maps. This highlights the small variations in the A/A_all map. Right panel: nominal significance maps for the normalisation (top) and slope (bottom). Both maps have the same colour scale (−3σ_nom to +3σ_nom). A negative sigma value refers to a value lower than the rest of the sky.