Showing Mean Value on Histogram

I have a histogram that I construct using the frequency function. The bin values are dynamically constructed from one use of the graph to the next, because of the different data I am examining.

Is there any way to show the mean (and potentially other statistical points e.g. 95%, UCL, etc. on the histogram, perhaps something like the attached mock-up?

I've tried sorting the mean value into the bins column, but because of the frequency array function, it can't be done that way.

Any suggestions?

Thanks in advance,

Tony