Integrated intensity maps of NH₃ (1,1) (left), (2,2) (middle), and (3,3) (right) for the W33 Main and W33 Main1 regions. The reference position is RA: 18:14:13.50, Dec: −17:55:47.0 (J2000). Theintegration range is 32 to 40 km s⁻¹. Contours start at 3.14 K km s⁻¹ (3σ) on a main beam brightness temperature scale and go up in steps of 3.14 K km s⁻¹. The unit of the color bar is K km s⁻¹. The limits of the mapped region are indicated with gray dashed lines. While the NH₃ (1,1) and (2,2) lines show absorption near the reference position, the (3,3) line emission indicates a peak in this region. The half-power beam width is illustrated as a gray filled circle in the lower left corners of the images.