{"database": "audit", "table": "anomaly_cohort_baseline", "rows": [["shipping", "events_per_day", 45.56333333333333, 52.79017269656667, 10, "2026-05-21 10:18:56"]], "columns": ["cohort_id", "feature", "mean", "stddev", "member_count", "learned_at"], "primary_keys": ["cohort_id", "feature"], "primary_key_values": ["shipping", "events_per_day"], "units": {}, "query_ms": 19.151578890159726}