| Id | SourceRatioHumidity |
| Name | Source.Ratio.Humidity |
| Aspect | catalytic activity concentration |
| Definition | The generation of humidity as a ratio of the total mass of the water vapor divided by the total volume of air. This is also called volumetric humidity. |
| Quantitykind | ratio |
| Parameters |
DryAirVolume, WaterVaporMass |