Comparison of the spectral line broadening in the He triplet lines using two different methods: formal definition of the optical depth (black) and the density-weighted average-velocity broadening (red). In the case of a more extended atmosphere of HAT-P-11 b, a better match between the formal and average methods is obtained when we include turbulence broadening (orange). These are forward models, and we are not yet attempting to fit them to observed signatures.