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*''A<sub>o</sub>'' is the total open area per unit length of pipe (m<sup>2</sup>/m),
*''A<sub>o</sub>'' is the total open area per unit length of pipe (m<sup>2</sup>/m),
*''g'' is acceleration due to gravity (m/s<sup>2</sup>)
*''g'' is acceleration due to gravity (m/s<sup>2</sup>)
−
*''Σ d'' is the total depth of bioretention components over the perforated pipe (mm) (e.g. ponding/[[mulch]]/[[filter media]]/[[choker layer]]),
+
*''Σ d'' is the total depth of bioretention components over the perforated pipe (m) (e.g. ponding/[[mulch]]/[[filter media]]/[[choker layer]]),
}}
}}