Translations:Versickerung und Retention/61/en
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| Qzu | = Inflow to infiltration system in m³/s | 
| rD(n) | = Rain yield for duration D and frequency n [L/sha] | 
| Ared | = connected paved areas in m² | 
| Qzu | = Inflow to infiltration system in m³/s | 
| rD(n) | = Rain yield for duration D and frequency n [L/sha] | 
| Ared | = connected paved areas in m² |