optional, single

—

The element indicates the average depth in metres (given as a real number) of the dive, calculated by the <divecomputer> using the recorded profile data.

<informationafterdive>

—

<averagevisibility>

(see also <informationafterdive>)

<!-- average depth of the dive is 11.8 m -->
<averagedepth>11.8</averagedepth>