{
  "synthetic": true,
  "as_of": "2026-09-16T12:00:00Z",
  "target_elapsed_minutes": 120,
  "valid_response": "First public human-agent event on or after creation and no later than as_of; bot replies and private notes do not count.",
  "unanswered": "Past target = breached; exactly at/below target = pending. A qualifying response at/below target meets target.",
  "percentile": "Nearest rank: sorted value at ceil(p*n), one-indexed. No business-hour/SLA interpretation."
}