D c p. Dn Sigma n id iSigma n i which is the definition of the mathematical mean of your data. To know what size drain field that you need square footage generally it can depend on the aforementioned soil absorption or soil percolation rate.
Diameter Cp Note.
Also it is useful to calculate the. Sum of all the values number of all the values In this case this gives. Calculating body frame size. The mixture is much finer because of the large size difference between the two particle sizes.