There is a large gap between the fact of a radiocarbon determination and the archaeological answer to the question to which it relates. The first part of the gap is addressed by calibration, that turns a measure of 14C activity into an estimate of a calendar date. Here is a contribution to the second part, by which a set of calibrated dates is made to provide a calendar range for the archaeological events under study.
This note follows ANTIQUITY's usual convention, under which uncalibrated determinations are given in lower-case, b.p., and calibrated dates in small capitals, BP, BC or AD.