1[2 {"id":"C1","text":"The provided file covers 2010-01-04 to 2019-12-31 and contains zero post_cut=1 rows, so the post-cut effect on the 5-year yield cannot be estimated.","results_keys":["sample_start","sample_end","n_treated","conclusion","feasibility","effect_estimate"],"status":"supported","caveat":"Absence of an estimate is a data-coverage failure, not evidence of no effect."},3 {"id":"C2","text":"The mean one-day change in the 5-year yield over the file was about -0.04 bp.","results_keys":["baseline_metric"],"status":"supported","caveat":"Descriptive only, pre-2020 period."}4]5