A4.7 Calculations
A4.7.1 Manual Method—If a volume percent recovered
reading is not available at the exact temperature calculated in
A4.3, determine the percent recovered by interpolation between
the two adjacent readings. Either the linear, as described
in 11.6.1, or the graphical procedure, as described in 11.6.2, is
permitted. The percent recovered is equal to Rxxx.