{
  "summary": {
    "date": "2026-03-25",
    "source_path": "/Users/lutherbot/.openclaw/workspace/data/cbbo_spread_cache/spread_cache_2026-03-25.parquet",
    "n_rows": 23397,
    "event_count": 17,
    "first_ts": 1774445403,
    "last_ts": 1774468799,
    "full_session_seconds": 23397
  },
  "events": [
    {
      "date": "2026-03-25",
      "cluster_id": 1,
      "ts": 1774445765,
      "cluster_size": 2,
      "max_p_ratio": 3.25,
      "max_c_ratio": 3.2499999999999996,
      "max_ratio": 3.25,
      "p_ratio_t0": 2.75,
      "c_ratio_t0": 3.2499999999999996,
      "p_spread_t0": 0.55,
      "c_spread_t0": 0.6499999999999999,
      "p_base_t0": 0.2,
      "c_base_t0": 0.2
    },
    {
      "date": "2026-03-25",
      "cluster_id": 2,
      "ts": 1774448710,
      "cluster_size": 3,
      "max_p_ratio": 3.0769230769230766,
      "max_c_ratio": 2.75,
      "max_ratio": 3.0769230769230766,
      "p_ratio_t0": 2.333333333333333,
      "c_ratio_t0": 2.0,
      "p_spread_t0": 0.7,
      "c_spread_t0": 0.4,
      "p_base_t0": 0.30000000000000004,
      "c_base_t0": 0.2
    },
    {
      "date": "2026-03-25",
      "cluster_id": 3,
      "ts": 1774448904,
      "cluster_size": 1,
      "max_p_ratio": 3.1666666666666665,
      "max_c_ratio": 2.25,
      "max_ratio": 3.1666666666666665,
      "p_ratio_t0": 3.1666666666666665,
      "c_ratio_t0": 2.25,
      "p_spread_t0": 0.95,
      "c_spread_t0": 0.45,
      "p_base_t0": 0.3,
      "c_base_t0": 0.2
    },
    {
      "date": "2026-03-25",
      "cluster_id": 4,
      "ts": 1774451785,
      "cluster_size": 6,
      "max_p_ratio": 6.833333333333333,
      "max_c_ratio": 2.9999999999999996,
      "max_ratio": 6.833333333333333,
      "p_ratio_t0": 3.4166666666666665,
      "c_ratio_t0": 2.25,
      "p_spread_t0": 2.05,
      "c_spread_t0": 0.225,
      "p_base_t0": 0.6,
      "c_base_t0": 0.1
    },
    {
      "date": "2026-03-25",
      "cluster_id": 5,
      "ts": 1774454144,
      "cluster_size": 2,
      "max_p_ratio": 10.0,
      "max_c_ratio": 2.9999999999999996,
      "max_ratio": 10.0,
      "p_ratio_t0": 10.0,
      "c_ratio_t0": 2.5,
      "p_spread_t0": 5.0,
      "c_spread_t0": 0.25,
      "p_base_t0": 0.5,
      "c_base_t0": 0.1
    },
    {
      "date": "2026-03-25",
      "cluster_id": 6,
      "ts": 1774454492,
      "cluster_size": 3,
      "max_p_ratio": 5.300000000000001,
      "max_c_ratio": 2.0,
      "max_ratio": 5.300000000000001,
      "p_ratio_t0": 5.300000000000001,
      "c_ratio_t0": 2.0,
      "p_spread_t0": 2.6500000000000004,
      "c_spread_t0": 0.2,
      "p_base_t0": 0.5,
      "c_base_t0": 0.1
    },
    {
      "date": "2026-03-25",
      "cluster_id": 7,
      "ts": 1774455901,
      "cluster_size": 8,
      "max_p_ratio": 8.181818181818182,
      "max_c_ratio": 16.499999999999996,
      "max_ratio": 16.499999999999996,
      "p_ratio_t0": 8.181818181818182,
      "c_ratio_t0": 16.499999999999996,
      "p_spread_t0": 4.5,
      "c_spread_t0": 1.65,
      "p_base_t0": 0.55,
      "c_base_t0": 0.1
    },
    {
      "date": "2026-03-25",
      "cluster_id": 8,
      "ts": 1774455975,
      "cluster_size": 1,
      "max_p_ratio": 2.6923076923076925,
      "max_c_ratio": 2.285714285714286,
      "max_ratio": 2.6923076923076925,
      "p_ratio_t0": 2.6923076923076925,
      "c_ratio_t0": 2.285714285714286,
      "p_spread_t0": 1.75,
      "c_spread_t0": 0.4,
      "p_base_t0": 0.6499999999999999,
      "c_base_t0": 0.175
    },
    {
      "date": "2026-03-25",
      "cluster_id": 9,
      "ts": 1774458125,
      "cluster_size": 8,
      "max_p_ratio": 6.5,
      "max_c_ratio": 3.75,
      "max_ratio": 6.5,
      "p_ratio_t0": 3.125,
      "c_ratio_t0": 2.0,
      "p_spread_t0": 1.25,
      "c_spread_t0": 0.2,
      "p_base_t0": 0.4,
      "c_base_t0": 0.1
    },
    {
      "date": "2026-03-25",
      "cluster_id": 10,
      "ts": 1774460608,
      "cluster_size": 5,
      "max_p_ratio": 9.42857142857143,
      "max_c_ratio": 21.0,
      "max_ratio": 21.0,
      "p_ratio_t0": 9.000000000000002,
      "c_ratio_t0": 21.0,
      "p_spread_t0": 3.1500000000000004,
      "c_spread_t0": 2.1,
      "p_base_t0": 0.35,
      "c_base_t0": 0.1
    },
    {
      "date": "2026-03-25",
      "cluster_id": 11,
      "ts": 1774461122,
      "cluster_size": 3,
      "max_p_ratio": 7.444444444444444,
      "max_c_ratio": 5.5,
      "max_ratio": 7.444444444444444,
      "p_ratio_t0": 3.222222222222222,
      "c_ratio_t0": 2.0,
      "p_spread_t0": 1.45,
      "c_spread_t0": 0.2,
      "p_base_t0": 0.45,
      "c_base_t0": 0.1
    },
    {
      "date": "2026-03-25",
      "cluster_id": 12,
      "ts": 1774461511,
      "cluster_size": 2,
      "max_p_ratio": 2.888888888888889,
      "max_c_ratio": 3.25,
      "max_ratio": 3.25,
      "p_ratio_t0": 2.888888888888889,
      "c_ratio_t0": 2.5,
      "p_spread_t0": 1.3,
      "c_spread_t0": 0.25,
      "p_base_t0": 0.45,
      "c_base_t0": 0.1
    },
    {
      "date": "2026-03-25",
      "cluster_id": 13,
      "ts": 1774462678,
      "cluster_size": 2,
      "max_p_ratio": 6.777777777777777,
      "max_c_ratio": 2.25,
      "max_ratio": 6.777777777777777,
      "p_ratio_t0": 6.777777777777777,
      "c_ratio_t0": 2.25,
      "p_spread_t0": 3.05,
      "c_spread_t0": 0.225,
      "p_base_t0": 0.45,
      "c_base_t0": 0.1
    },
    {
      "date": "2026-03-25",
      "cluster_id": 14,
      "ts": 1774464508,
      "cluster_size": 1,
      "max_p_ratio": 2.5,
      "max_c_ratio": 2.0,
      "max_ratio": 2.5,
      "p_ratio_t0": 2.5,
      "c_ratio_t0": 2.0,
      "p_spread_t0": 1.25,
      "c_spread_t0": 0.1,
      "p_base_t0": 0.5,
      "c_base_t0": 0.05
    },
    {
      "date": "2026-03-25",
      "cluster_id": 15,
      "ts": 1774464933,
      "cluster_size": 11,
      "max_p_ratio": 6.363636363636363,
      "max_c_ratio": 2.0,
      "max_ratio": 6.363636363636363,
      "p_ratio_t0": 4.444444444444445,
      "c_ratio_t0": 2.0,
      "p_spread_t0": 2.0,
      "c_spread_t0": 0.1,
      "p_base_t0": 0.45,
      "c_base_t0": 0.05
    },
    {
      "date": "2026-03-25",
      "cluster_id": 16,
      "ts": 1774468203,
      "cluster_size": 1,
      "max_p_ratio": 3.8571428571428577,
      "max_c_ratio": 2.0,
      "max_ratio": 3.8571428571428577,
      "p_ratio_t0": 3.8571428571428577,
      "c_ratio_t0": 2.0,
      "p_spread_t0": 2.7,
      "c_spread_t0": 0.1,
      "p_base_t0": 0.7,
      "c_base_t0": 0.05
    },
    {
      "date": "2026-03-25",
      "cluster_id": 17,
      "ts": 1774468501,
      "cluster_size": 1,
      "max_p_ratio": 2.7222222222222223,
      "max_c_ratio": 2.0,
      "max_ratio": 2.7222222222222223,
      "p_ratio_t0": 2.7222222222222223,
      "c_ratio_t0": 2.0,
      "p_spread_t0": 2.45,
      "c_spread_t0": 0.1,
      "p_base_t0": 0.9,
      "c_base_t0": 0.05
    }
  ]
}