This dataset contains the dive profile data for a real scuba dive
  uploaded from a dive computer. It gives the
  depth, water temperature, breathing gas cylinder pressure,
  calculated residual bottom time, and calculated workload,
  recorded every 4 seconds throughout the dive.  The dive site was the wreck of the vessel Baron Gautsch in Croatia.
  The dive, to a maximum depth of 40 metres,
  with total dive time of 40 minutes,
  was conducted on nitrox (EAN 30) by Vittorio Broglio.
  The examples show how to convert the depth-time data to a dive
  object.