Overview of small AR NOAA 12708. Starting in the upper left panel and moving clockwise: Speckle-restored blue continuum (4505 Å) and Ca II H (3968 Å) images from HiFI, Si I 10827 Å slit-reconstructed blue wing (λ₀ − 0.35 Å) from GRIS, and MOMFBD-restored blue-line wing (λ₀ − 0.22 Å) image from GFPI of the Na I D₂ 5890 Å line. We note that the image scales from all instruments are different. The black stripe in the lower part of the Si I λ₀ − 0.35 Å image indicates that there are no data available. Red circles identified by letters (a)–(c) indicate the isolated BPs under study. It is interesting to note that the BPs in the Si I λ₀ − 0.35 Å panel do not always match the other instruments because it is a slit-reconstructed image in the range of 08:38–09:07 UT.