When WEIGHT and OUTPUT statements are used in PROC CAPABILITY and the PCTLPTS= option is specified on the OUTPUT statement, the OUT= data set will contain the default weighted quantiles (0.01, 0.05, 0.10, etc.) regardless of the quantile values requested with the PCTLPTS= option. The output quantile variable names are still generated according the PCTLPTS= and PCTLPRE= options on the OUTPUT statement, but the values are incorrect.

To circumvent this problem, use PROC UNIVARIATE instead of PROC CAPABILITY.