Circular polarisation and null profiles for the 2016 Narval observations. Left: Stokes V (top) and null (bottom) profile computed using the full line list between 360 and 1080 nm. Right: same profiles but obtained using only red (> 500 nm) lines. In the latter case, we note that the spurious signal at line centre has been removed. The red solid lines in all panels indicate the median profile.