Temperature (left), line-of-sight velocity (middle) and microturbulent velocity (right) as derived from the inversions. Each row shows a different heights in the atmosphere, as marked in the temperature panels. The identified Ca II K bright fibrils are overplotted in white and the fibril studied in Sect. 3.2.4 is shown with a red path. The contours levels overplotted on the temperature panel at log(τ_500 nm) = −0.06 show the strength of the longitudinal component of the photospheric magnetic field at 200 G (cyan) and 800 G (green).