optional, single

—

The <surfaceintervalbeforedive> statement puts into brackets subsequent elements concerning the description of what happened during the surface interval before the dive (for example travelling to the new dive spot over a mountain pass, and/or through a valley with altitude and time information).

Therefore, <surfaceintervalbeforedive> is used to describe the diver's "previous history" in case his/her tissues are not "saturated" according to ambient pressure at the beginning of a dive, but this knowledge is necessary for a correct decompression calculation.

Important occurences after the dive are given inside <surfaceintervalafterdive> (for example a hyperbaric chamber treatment and the transport to this facility).

<dive>, <profile>, <table>

<exposuretoaltitude>, <infinity/>, <passedtime>, <wayaltitude>

<dive>, <profile>, <surfaceintervalafterdive>, <table>

(see also <dive>)

<dive id="dive-007">
    <!-- at first data concerning the dive's prehistory -->
    <surfaceintervalbeforedive>
        <!-- in this case only the surface interval of 4h53min
                is given in seconds -->
        <passedtime>17580.0</passedtime>
    </surfaceintervalbeforedive>
    <!-- now the further description of the dive is following -->
    <datetime>...</datetime>
    <!-- here more data describing the dive (profile) -->
</dive>
                

<dive id="dive_1">
    <!-- 1. dive -->
    <!-- at first data concerning the dive's prehistory -->
    <surfaceintervalbeforedive>
        <infinity/>
    </surfaceintervalbeforedive>
    <!-- now description of the dive -->
    <datetime>...</datetime>
    <!-- here more data describing the dive (profile) -->
</dive>
<dive id="dive_2">
    <!-- 2. dive at same spot, 1.5 h later -->
    <surfaceintervalbeforedive>
        <passedtime>5400.0</passedtime>
    </surfaceintervalbeforedive>
    <!-- now description of the dive -->
    <datetime>...</datetime>
    <!-- here more data describing the dive (profile) -->
</dive>
<dive id="dive_3">
    <!-- 3. dive -->
    <surfaceintervalbeforedive>
        <!-- until 1 h after end of dive prolonged staying at place -->
        <passedtime>3600.0</passedtime>
        <!-- now going by car to the next lake -->
        <!-- after 10 min of driving the valley is reached -->
        <wayaltitude waytime="4200.0">500.0</wayaltitude>
        <!-- 5 min driving in the valley -->
        <wayaltitude waytime="4500.0">500.0</wayaltitude>
        <!-- 30 min later a pass is reached -->
        <wayaltitude waytime="6300.0">1250.0</wayaltitude>
        <!-- 5 min enjoying the viewpoint ... -->
        <wayaltitude waytime="6600.0">1250.0</wayaltitude>
        <!-- 40 min driving down to the valley -->
        <wayaltitude waytime="9000.0">380.0</wayaltitude>
        <!-- after 20 min the next dive spot at 430.0 m is reached -->
        <wayaltitude waytime="10200.0">430.0</wayaltitude>
        <!-- 30 min preparations until beginning the next dive -->
        <wayaltitude waytime="12000.0">430.0</wayaltitude>
    </surfaceintervalbeforedive>
    <!-- now description of the dive -->
    <datetime>...</datetime>
    <!-- here more data describing the dive (profile) -->
</dive>