Same as Fig. 1 but for CCS and SO₂, which are mostly detected towards the inner part of the CMZ. Top: velocity-integrated maps of CCS (8₉ − 7₈), (11₁₂ − 10₁₁), and (18₁₉ − 17₁₈). Levels start at 3σ (1σ = 15.7, 30, and 33 mJy beam⁻¹, respectively; white contours) with steps of 7σ (black contours). Bottom: velocity-integrated maps of SO₂ (7_2, 6 − 6_1, 5), (12_1, 11 − 12_0, 12) and (19_4, 16 − 19_3, 17), from left to right. Levels start at 3σ (1σ = 18.4, 91.5 and 125 mJy beam⁻¹, respectively; white contours) with steps of 5, 3, and 3σ (black contours), respectively.