{
  "rule_version": "main-fan-consistency-2026.3",
  "threshold_version": "main-fan-thresholds-2026.3",
  "severity": {
    "abnormal_switch_interval_minutes": null,
    "abnormal_flow_deviation_percent": 15.0,
    "abnormal_parameter_fields": []
  },
  "curve": {
    "minimum_points": 4,
    "minimum_common_flow_coverage": 0.8,
    "mean_pressure_deviation_percent": 5.0,
    "maximum_pressure_deviation_percent": 10.0,
    "maximum_power_deviation_percent": 10.0,
    "efficiency_difference_points": 5.0,
    "operating_flow_deviation_percent": 10.0,
    "operating_pressure_deviation_percent": 10.0
  },
  "switch": {
    "maximum_switch_interval_minutes": 10,
    "window_minutes": 30,
    "transition_minutes": 5,
    "minimum_completeness": 0.9,
    "sample_interval_seconds": 60,
    "maximum_cv": 0.05,
    "flow_deviation_percent": 10.0,
    "pressure_deviation_percent": 10.0,
    "minimum_duration_minutes": 10,
    "maximum_recovery_minutes": 30
  }
}