{"database": "audit", "table": "anomaly_baseline_volume", "rows": [["bc:account", 2, 17, 6.333333333333333, 8.386497083606084, 3, "2026-05-21 06:58:58"]], "columns": ["source", "day_of_week", "hour", "mean_per_hour", "stddev", "sample_size", "learned_at"], "primary_keys": ["source", "day_of_week", "hour"], "primary_key_values": ["bc:account", "2", "17"], "units": {}, "query_ms": 1.5712450258433819}