JVLA 1.6 cm continuum map of Sgr B2(M) presented as gray shaded areas and black contours with levels of 5, 10, 30, and 50 × 0.2 mJy beam⁻¹. The reference position is α_J2000 = 17^h47^m20197, and δ_J2000 = −28°23′06484, the peak position of continuum source F10.39. The cross, thin diamond, diamond, circle and star show the positions of NH₃ (6,3), (7,4), (8,5), (9,6), and (10,7) emissions. H₂O (McGrath et al. 2004), class II CH₃OH (Lu et al. 2019), and OH (Gaume & Claussen 1990) masers are presented as triangles, squares, and hexagons, respectively. The color bar indicates the velocity range (V_LSR) of the maser spots. The systemic velocity of Sgr B2(M) is V_LSR = 62 km s⁻¹ (Belloche et al. 2013).