ALMA configurations used in the ALMAGAL project. Four different nominal ALMA 12m (TM) arrays were used for the 1017 targets, plus the ACA 7m array. The targets are divided into two samples: “Near” for sources with distances <4.7 kpc, and “Far” for sources at >4.7 kpc. The bottom x-axis shows the baseline ranges, while the top x-axis shows the angular scales, and the corresponding spatial scales for a distance of 4.7 kpc. Light-colored rectangles show the range from minimum to maximum baseline for each array configuration, while the darker colors show the range from the 5^th to the 80^th percentile of array baselines.