Examples of ALMA Band 3 counterparts of EUV brightenings. From left to right: HMI magnetogram, spectral radiance in AIA 1600 Å, AIA 304 Å, and AIA 171 Å, and ALMA 3 mm brightness temperature. All panels show a 10″ × 10″ FOV centered on NFs. The contours correspond to T_b(3 mm) = 10 kK. The image scale is indicated in the panels in the second column. The range in the HMI magnetograms is clipped at ±0.3 kG and the AIA images are capped at 170 DN s⁻¹ (1600 Å), 2.5 × 10⁴ DN s⁻¹ (304 Å) and 10⁴ DN s⁻¹ (171 Å). The EUV images are displayed in logarithmic scale. The ALMA color bars are in units of kilokelvin.