data_storage/baselines.json

[
  {
    "device_id": "test_user",
    "feature_name": "hrv_rmssd",
    "baseline_type": "personal",
    "baseline_mean": 75.45454545454545,
    "baseline_std": 5.0,
    "personal_mean": 75.0,
    "personal_std": 5.0,
    "data_count": 11,
    "time_period_primary": "morning",
    "time_period_secondary": "",
    "is_weekend": 0,
    "last_updated": "2025-11-27T14:24:45.274978"
  },
  {
    "device_id": "test_user_003",
    "feature_name": "hrv_rmssd",
    "baseline_type": "personal",
    "baseline_mean": 74.83870967741936,
    "baseline_std": 5.0,
    "personal_mean": 75.0,
    "personal_std": 5.0,
    "group_mean": 75.0,
    "data_count": 31,
    "time_period_primary": "",
    "time_period_secondary": "",
    "is_weekend": 0,
    "last_updated": "2025-11-27T14:34:26.141050"
  }
]