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# floorNumber

The floor number on which the anchor resides.

```
var floorNumber: Int { get }
```

## Discussion

This property indicates the floor that the DL-TDOA anchor is on. Negative values represent floors below ground level.

Use this property in combination with [`height`](/documentation/NearbyInteraction/NIDLTDOAMeasurement/FloorElevation-swift.class/height) to determine the precise vertical position of the anchor within a floor, for deployments in buildings that have multiple floors.

---

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