External convergence distribution from Buckley-Geer et al. (2020) with additional weighting applied based on the predicted external shears for the power-law (red lines) and composite (blue lines) models from LENSTRONOMY (solid lines) and GLEE (dashed lines). Each illustrated GLEE distribution is a BIC-weighted combination of multiple κ_ext distributions corresponding to the external shear constraint from individual lens model setups. In contrast, each illustrated LENSTRONOMY distribution is a single κ_ext distribution corresponding to the combined (through BIC weighting) external shear value from all the model setups within a model family (i.e. power law or composite). The κ_ext distributions used by one team were not revealed to the other team before the un-blinding to maintain independence.