Declination-velocity maps for the different molecules observed at the Sgr A complex. The Δδ-v maps have been averaged in the right ascension ranges shown at the top of each column. Black contour levels are −3 (dashed contour), 3, 6, 9, and 12σ. The following contours are in steps of 9σ until 1 K. In the case of the CS(1–0) maps, black contour levels are −3 (dashed contour), 3, 6, 9, 12, and 15σ. The following contours are in steps of 12σ. White contours begin from 1 K and are in steps of 1 K. The 3σ levels corresponding to the 60′′ and 90′′ wide right ascension ranges are 0.04 and 0.03 K for the SiO(2–1), H¹³CO⁺(1–0), and HN¹³C(1–0) maps; 0.06 and 0.04 K for the HNCO(5–4) and C¹⁸O(1–0) maps; and 0.15 and 0.12 K for the CS(1–0) maps. The wedge on the right shows the intensity gray scale for each molecular line.