I have calculated a series of values for the efficiency of an electrical system together with the uncertainty for each value as shown in the table below. I would like to plot these values as a graph in Mac Numbers (or Excel, as the principles will be the same) along with error bars for each point.

Ideally, I would like to set the uncertainty value as the error bar for each point but the spreadsheet limits me to one error bar value for all the points. So do I list all the values, get the Mean and then calculate the 'Standard Error of the Mean' and then use that as my error bar value or something else?

Thanks

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