samplingRange

Example 

<min>12</min>
<interval>
  <unit>HOUR</unit>
  <value>42.189</value>
</interval>

This consists of

choice
<min>integer</min>
<max>integer</max>
<min>integer</min>
<max>integer</max>

<interval>
timeInterval
</interval>

Places this can be found

sampling contains this directly

seismogramSampling contains this directly