The approach described in this annex is intended as a practical way to address the rounding of values used in calculation operations as well as the rounding of reportable values. In particular, conformance to specification limits is assessed by comparison of the reportable value (rounded appropriately) to specified limits. Values can be rounded to n significant digits (Section 5) or to n decimal places as shown in Table 1. Of these two approaches, rounding to decimal places is recommended to compare reported values to specification limits.