{
  "weekly": [
    { "date": "2025-06-06", "count": 12 },
    { "date": "2025-06-13", "count": 15 },
    { "date": "2025-06-20", "count": 9 },
    { "date": "2025-06-27", "count": 17 }
  ],
  "callsigns": [
    "KD7XYZ",
    "N0CALL",
    "KI7ABC",
    "W7BYU",
    "KJ7DEF",
    "KA6TST",
    "W1RAD",
    "KN7HAM"
  ]
}