I'd be inclined to use the relative LSPR ratios - which happens to roughly correspond to the UP ratio of the machines. Seems intuitively reasonable.
Wrap some weasel words around your recommendation (there are some examples on the LPSR site) in case it all goes pear-shaped, and walk away contented. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN