Density at the top of the chromosphere, ρ_{top, chromo} (orange symbols, left axis), and temperature at the base of the corona, T_{bot, corona} (blue symbols, right axis), as functions of the mean unsigned photospheric vertical magnetic field, ⟨|B_z|⟩_photo. The chromospheric density is averaged at the height where the horizontally averaged temperature reaches 20 kK, while the coronal temperature is averaged at z = 6 Mm. Error bars indicate one standard deviation in time over the selected quasi-static interval. The figure highlights the monotonic increase in chromospheric density with magnetic-field strength and the non-monotonic response of the coronal-base temperature.