The velocity-integrated intensity maps of (a) HNCO(4–3), (b) HNCO(5–4), and (c) HNCO(6–5) at their original spatial resolution. The black and red boxes mark the regions listed in Table 2, where AGN is marked with the red box. These maps are masked with a 3.0σ threshold after the integration over velocity. The integrated velocity range for HNCO(4–3) and HNCO(6–5) are [−230 km s⁻¹, 230 km s⁻¹], and HNCO(5–4) with [−230 km s⁻¹, 167 km s⁻¹] so that to exclude the nearby line.