I am trying to insert error bars to my graph but I am having difficulty. The error in the y-axis is the same for all the points in the graph so I was able to do that quite easily. However, the error in the x-axis is different for each inividual point on the graph. Is there a way of entering the error values individually for each point? Do I use the 'custom' setting in the error bar options? But I have not worked out how to use this. I am using excel 2007.

Thanks for any help.