Presentation on Stage 1 test campaign results for WGWT test procedure precision. ETRTO achieved a Weighted Standard Deviation of 0.071 for Normal and 3PMSF categories, exceeding the 12% targeted KPI improvement by over 50%, demonstrating that R117 amendments to improve precision were effective. ETRTO states the KPI target is fully achieved and is not in favor of JASIC’s proposal to revise correction formula coefficients, as the 2025 dataset is not representative and such revision would deteriorate standard deviation of the 2021 Round Robin Test dataset.