A datalink and PI-calc question for the really talented amongst you!

So here is a an issue I have, that i wondered if Pi could solve.
 
I Know in Procbook (and I use this capability) you can make Procbook calcaulate Steam Table data,
this is really usefull for me in the calcaulation of Steam tubine peformance data. In fact i have a "live" ST Heat rate Proc book page.
However for reporting requirments this data really needs to be in an Excel report format, with Average hourly test data used to calcaulate the Steam temps, flows and other information I need.
Gathering this into Excel via datalink is very easy.
Howvever, is there a way to gather enthalpy data as an hourly average, straight out of PI, and into excel, (via datalink) somehow using the "StmSI_hpt" expression available in procbook?
The problem is made worse by the fact this i have to work via a remote server access excell sheet. As the company ISIT security restrictions do not allow me to Directly acces the PI server as it sits on the process network. (please do not inform me of how this is not neccesary, I know its not, but the company ISIT have a policy and will not bend, it took me three years to get remote server access).
Also I understand i can copy and paste all my averages into a seperate spreadsheet then individulally calaulate the steam table data, and then produce the report.
Howevre i would much rather build just one spreadsheet that has direct access to the PI data, so reports are easily built by just entering the test run time and date into a sheet. This way the less knowledgeable in out team can produce the reports without a tedious amount of datashifting, and written procedures.
 
Ok, does anyone have a cunning plan.
 
Ian Fuller