{
  "T-01": {"quantity": "temperature", "unit": "°C", "position": [0.0, 1.5], "readings": [21.4, 21.6, 21.5]},
  "T-02": {"quantity": "temperature", "unit": "°C", "position": [3.0, 1.5], "readings": [22.1, 22.4, 22.0, 22.3]},
  "H-01": {"quantity": "humidity", "unit": "%", "position": [1.5, 0.0], "readings": [58, 61, 60]}
}