C is the runoff coefficient for that drainage area, that is, the fraction of rainfall on the drainage area that becomes storm water runoff.
A is the area that drains to the design point of interest (the drainage area) in acres (for SI units: ha).The primary equation for Rational Method calculations is: Q = CiA, where: See screenshot:ĩ.The Rational Method Equation and Parameters Then right click the line in the chart, and select Add Data Labels from the context menu. If you are using Excel 2013, go to the Choose the chart type and axis for your date series: box in the Change Chart Type dialog, click the Average box and specify one line style in its drop down list, at last click the OK to exit this dialog. In the Change Chart Type dialog, select a line type you want, and click OK to close the dialog. Select one Average column (the green bricks) and right click to select Change Series Chart Type from the context menu. Select the data range and click Insert > Column > Clustered Column, see screenshot:Ħ. You can specify the number of the decimal part with these steps: firstly select the data range secondly right click to select Formats Cells from the context menu then click Number from the Category: box under the Number tab, and specify the Decimal places in the right section. Then drag the fill handle to fill the range you want to calculate the cumulative averages. Then select a blank cell, for instance, the Cell C2, type this formula =AVERAGE(B$2:B2) (the cell B$2 indicates the start data of the profit, the cell B2 stands the profit in the specific month) in to it, and click Enter button. Type the list of data you need to calculate the cumulative average in a worksheet such as the following screenshot:Ģ. Amazing! Using Efficient Tabs in Excel Like Chrome, Firefox and Safari! Save 50% of your time, and reduce thousands of mouse clicks for you every day!ġ.
0 kommentar(er)
