{
  "tool": "biometric-breathing-sync",
  "version": "1.0.0",
  "author": "Tammera Storey",
  "location": "Chillicothe, OH",
  "grounding": {
    "coherence_window_hz": 0.1,
    "coherence_window_bpm": 6.0,
    "optimal_respiration_bpm_range": [5.5, 6.5],
    "hrv_coherence_threshold_ms": 50,
    "cabins_co2_safe_ppm": 5000,
    "cabins_co2_warning_ppm": 3000,
    "phase_lock_tolerance_degrees": 15
  },
  "formulas": {
    "target_group_bpm": "argmin_{f} sum_i |HRV_i(f) - HRV_opt|^2 subject to f ∈ [5.5, 6.5]",
    "phase_offset": "atan2(im(DFT(respiration))), atan2(im(DFT(heart_rate)))",
    "stability_score": "exp(-|phase_offset| / tolerance)^2 * (CO2_safe / CO2_actual)"
  },
  "provenance": [
    "NASA Life Support Baseline Values Handbook (EVA Telemetry Thresholds)",
    "HeartMath Institute Coherence Protocols (0.1 Hz window)",
    "Personal Lab Notes: Chillicothe Soil pH → Crew Cohesion Mapping (2026-07-09)"
  ],
  "constraints": {
    "min_crew_size": 2,
    "max_crew_size": 12,
    "valid_hrV_range_ms": [20, 200],
    "valid_co2_range_ppm": [400, 10000]
  }
}