Imitating Gaussian Blur with Smart Blur

Last year I used a 1% Gaussian Blur for a photo project. Today I'd like to recreate the same blur effect in a non-destructive way, with the Smart Blur function.

However I'm struggling to find the appropriate Radius, Threshold and Mode settings to approach the 1% Gaussian Blur.

Does anyone know how to convert Gaussian Blur settings to Smart Blur? Or which Threshold and Mode the smart one uses?

Thanks in advantage.