{
  "fund": "南方纳指100 (全链路估算)",
  "update_time": "2026-06-03T10:06:38.005Z",
  "date_debug": {
    "T": "2026-06-03",
    "T1": "2026-06-02"
  },
  "prices": {
    "2026-06-03": {
      "nav": 2.3979,
      "change": "+0.25%"
    },
    "2026-06-02": {
      "nav": 2.392,
      "change": "+0.48%"
    },
    "2026-06-01": {
      "nav": 2.3806,
      "change": "+0.53%"
    },
    "2026-05-29": {
      "nav": 2.368,
      "change": "+0.25%"
    },
    "2026-05-28": {
      "nav": 2.362,
      "change": "+0.74%"
    },
    "2026-05-27": {
      "nav": 2.3447,
      "change": "-0.08%"
    },
    "2026-05-26": {
      "nav": 2.3466,
      "change": "--"
    }
  },
  "debug_info": {
    "future": {
      "method": "Futures Avg(100) / Index Prev Close",
      "future_avg": 30736.0975,
      "future_count": 100,
      "index_prev_close": 30660.6,
      "expression": "30736.10 / 30660.60"
    },
    "spot_T1_est": true,
    "spot": {
      "expression": "30660.6 (T-1) / 30513.86 (T-2)",
      "date_range": "2026-06-01 -> 2026-06-02"
    }
  }
}