Selected velocity-integrated maps for the different molecules observed at the Sgr A complex. Maps of the CS(1–0) line (Tsuboi et al. 1999) are displayed at the bottom. Each column corresponds to the same velocity range, indicated at the top of each column. The wedge at the top shows the intensity gray scale for each column. Contour levels for the integrated-velocity emission (in the  scale) of all the molecular lines, except CS(1–0), are −3σ (dashed contour), 3σ, from 2.0 to 12 in steps of 1.5 K km s^-1 and from 12 in steps of 6 K km s^-1. Contour levels for the velocity-integrated CS(1–0) emission are −3σ (dashed contour), 3σ, and from 6 in steps of 6 K km s^-1. White contours are from 12 K km s^-1. The 3σ levels corresponding to the 15, 30, and 45 km s^-1 wide velocity ranges are 0.7, 1.0, and 1.2 K km s^-1 for the SiO(2–1), H¹³CO⁺(1–0), and HN¹³C(1–0) maps; 1.0, 1.3, and 1.7 K km s^-1 for the HNCO(5–4) and C¹⁸O(1–0) maps; and 2.6, 3.7, and 4.5 K km s^-1 for the CS(1–0) maps. The beam size (30′′) is shown in the bottom-left corner of the first column panels. Sgr A^∗ is the origin for the offset coordinates.