[en] By letter dated August 25, 1976, licensees of the Nuclear Regulatory Commission were requested to submit, as a voluntary one-time action, a statistical summary report of whole-body personnel monitoring results for their activities during 1975. This report presents these personnel monitoring data in the form of tables and log-probability plots that facilitate evaluation and comparison of the data. Licensee estimates of the effort (man-hours and total cost) expended in preparing the statistical summary report are also presented