{"database": "fitbit", "table": "heart_rate_zones", "rows": [["2015-04-19", 1255, 19, 30, 18]], "columns": ["date", "below_zone_1", "in_zone_1", "in_zone_2", "in_zone_3"], "primary_keys": ["date"], "primary_key_values": ["2015-04-19"], "units": {}, "query_ms": 1.281502001802437}