---
title: MTRNitrogenDioxideConcentrationMeasurementMeasurementUnit.PPT
framework: matter
role: symbol
role_heading: Case
path: matter/mtrnitrogendioxideconcentrationmeasurementmeasurementunit/ppt
---

# MTRNitrogenDioxideConcentrationMeasurementMeasurementUnit.PPT

## Declaration

```swift
case PPT
```