[
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    "run_id": "pinned_run_001",
    "warn_rate": 0.012,
    "unknown_rate": 0.004,
    "delta_t": 0.298
  },
  {
    "run_id": "pinned_run_002",
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    "unknown_rate": 0.002,
    "delta_t": 0.301
  },
  {
    "run_id": "unpinned_run_001",
    "warn_rate": 0.018,
    "unknown_rate": 0.009,
    "delta_t": 0.325
  },
  {
    "run_id": "unpinned_run_002",
    "warn_rate": 0.020,
    "unknown_rate": 0.007,
    "delta_t": 0.330
  }
]