Erratum for: A&A, 663, A166 (2022), https://doi.org/10.1051/0004-6361/202243607

The derivation in Appendix B of the original paper contains a typo. The result is however correct, and the typo does not otherwise affect the paper. The first line in the right-hand column on page 9 should have read “The pressure balance along the vertical (z) direction involves the term 〈∇_i · σ_iz〉_z which is equal to ∂P_tot/∂z.” Here, summation over i is implied. The original sentence inadvertently had 〈∇_z · σ_iz〉_z. The result then follows trivially from the fundamental theorem of calculus, and the periodicity of B in the horizontal direction, which implies ${\langle \frac{\partial B_x{B}_z}{\partial x}\rangle }_z={\langle \frac{\partial B_y{B}_z}{\partial y}\rangle }_z=0$.

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