{
  "version": 1,
  "kind": "treemap",
  "title": "212 on-call hours in the quarter",
  "unit": "hours",
  "parts": [
    {"text": "Disk alerts", "amount": 74, "role": "emphasis"},
    {"text": "Certificate renewals", "amount": 41},
    {"text": "Real incidents", "amount": 38},
    {"text": "Flapping health checks", "amount": 35},
    {"text": "Access requests", "amount": 24}
  ],
  "caption": "Every disk alert was cleared by the same two commands."
}