[DB]Data for sensors

We will need to add some data into the DB concerning the normal levels of air quality, temperature etc. so that we are able to tell when the levels are dangerous/harmful

该 issue 提到向 database 添加用于 sensor thresholds (air quality, temperature) 的数据，以确定危险级别。在 repository 中查找 database schema files、sensor data models 或 configuration scripts。确定 reference data 存储在哪里以及如何加载。检查现有的 seed data 或 initialization scripts，以了解格式和插入方法。

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