>Is it safe to translate the "sometimes" to "once PI > 4"? ...
I've been involved in situations where the PI was less than 4, but nothing could be done to fix it. -teD In God we Trust! All others bring data! -- W. Edwards Deming ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
