# HX-02 reconstruction self-check

Using the rounded source inputs gives an effective area of **2.563959008 m2** versus the printed **2.619 m2** (about **-2.10%**). The corresponding hydraulic-diameter calculation gives **0.005128205 m** versus the printed **0.005 m** (about **+2.56%**).

These differences are plausible rounding/definition differences, but the printed values remain source values and the derived values remain labeled as a self-check. No replacement value is authorized.