All EUCAST distributions of inhibition zone diameters have been curated via a new algorithm and software which automatically identifies wild type distributions, allocates ECOFFs and TECOFFs and reports confidence intervals.
Here is an example for amikacin and E. coli . Zone diameter distributions are available from the same site as MIC distributions - just click on "Disk diffusion" during the search. The distributions can, in the same was as MIC distributions can, serve as calibrates for laboratory work.