diff --git a/dives/TestDiveDM4.xml b/dives/TestDiveDM4.xml
new file mode 100644
index 000000000..aa708ea78
--- /dev/null
+++ b/dives/TestDiveDM4.xml
@@ -0,0 +1,196 @@
+<divelog program='subsurface' version='3'>
+<settings>
+<divecomputerid model='Vyper Air' deviceid='ffffffff' serial='20400612'/>
+</settings>
+<divesites>
+</divesites>
+<dives>
+<dive number='1' date='2013-02-02' time='16:14:08' duration='59:20 min'>
+  <notes>Notes are here</notes>
+  <cylinder workpressure='200.0 bar' o2='33.0%' start='205.11 bar' />
+  <divecomputer>
+  <depth max='22.44 m' mean='16.291 m' />
+  <temperature air='28.0 C' water='26.0 C' />
+  <sample time='0:00 min' depth='1.39 m' temp='28.0 C' pressure='206.52 bar' />
+  <sample time='0:20 min' depth='4.63 m' pressure='205.11 bar' />
+  <sample time='0:40 min' depth='7.66 m' pressure='203.6 bar' />
+  <sample time='1:00 min' depth='11.76 m' pressure='201.95 bar' />
+  <sample time='1:20 min' depth='16.77 m' pressure='200.03 bar' />
+  <sample time='1:40 min' depth='20.82 m' temp='27.0 C' pressure='198.3 bar' />
+  <sample time='2:00 min' depth='21.21 m' pressure='195.75 bar' />
+  <sample time='2:20 min' depth='21.89 m' pressure='194.02 bar' />
+  <sample time='2:40 min' depth='21.67 m' pressure='192.43 bar' />
+  <sample time='3:00 min' depth='21.7 m' pressure='191.11 bar' />
+  <sample time='3:20 min' depth='22.05 m' temp='26.0 C' pressure='189.73 bar' />
+  <sample time='3:40 min' depth='21.94 m' pressure='188.5 bar' />
+  <sample time='4:00 min' depth='21.5 m' pressure='187.16 bar' />
+  <sample time='4:20 min' depth='21.22 m' pressure='186.05 bar' />
+  <sample time='4:40 min' depth='21.36 m' pressure='185.17 bar' />
+  <sample time='5:00 min' depth='21.4 m' pressure='184.02 bar' />
+  <sample time='5:20 min' depth='21.73 m' pressure='182.64 bar' />
+  <sample time='5:40 min' depth='21.44 m' pressure='181.76 bar' />
+  <sample time='6:00 min' depth='21.49 m' pressure='180.84 bar' />
+  <sample time='6:20 min' depth='21.13 m' pressure='179.67 bar' />
+  <sample time='6:40 min' depth='21.33 m' pressure='178.53 bar' />
+  <sample time='7:00 min' depth='22.04 m' pressure='178.31 bar' />
+  <sample time='7:20 min' depth='22.41 m' pressure='177.35 bar' />
+  <sample time='7:40 min' depth='22.02 m' pressure='175.77 bar' />
+  <sample time='8:00 min' depth='21.72 m' pressure='174.27 bar' />
+  <sample time='8:20 min' depth='21.26 m' pressure='173.85 bar' />
+  <sample time='8:40 min' depth='20.89 m' pressure='172.56 bar' />
+  <sample time='9:00 min' depth='21.1 m' pressure='171.35 bar' />
+  <sample time='9:20 min' depth='21.24 m' pressure='170.33 bar' />
+  <sample time='9:40 min' depth='20.36 m' pressure='169.29 bar' />
+  <sample time='10:00 min' depth='20.15 m' pressure='168.59 bar' />
+  <sample time='10:20 min' depth='20.04 m' pressure='167.8 bar' />
+  <sample time='10:40 min' depth='19.95 m' pressure='166.2 bar' />
+  <sample time='11:00 min' depth='19.55 m' pressure='165.48 bar' />
+  <sample time='11:20 min' depth='19.36 m' pressure='164.12 bar' />
+  <sample time='11:40 min' depth='18.59 m' pressure='163.4 bar' />
+  <sample time='12:00 min' depth='18.04 m' pressure='162.63 bar' />
+  <sample time='12:20 min' depth='17.57 m' pressure='161.95 bar' />
+  <sample time='12:40 min' depth='17.2 m' pressure='160.65 bar' />
+  <sample time='13:00 min' depth='16.63 m' pressure='159.58 bar' />
+  <sample time='13:20 min' depth='17.12 m' pressure='158.25 bar' />
+  <sample time='13:40 min' depth='17.04 m' pressure='157.56 bar' />
+  <sample time='14:00 min' depth='17.15 m' pressure='156.6 bar' />
+  <sample time='14:20 min' depth='17.07 m' pressure='156.06 bar' />
+  <sample time='14:40 min' depth='16.71 m' pressure='155.24 bar' />
+  <sample time='15:00 min' depth='17.02 m' pressure='154.44 bar' />
+  <sample time='15:20 min' depth='16.76 m' pressure='153.71 bar' />
+  <sample time='15:40 min' depth='16.43 m' pressure='152.75 bar' />
+  <sample time='16:00 min' depth='16.81 m' pressure='152.09 bar' />
+  <sample time='16:20 min' depth='16.95 m' pressure='151.12 bar' />
+  <sample time='16:40 min' depth='17.06 m' pressure='150.37 bar' />
+  <sample time='17:00 min' depth='16.81 m' pressure='149.38 bar' />
+  <sample time='17:20 min' depth='17.01 m' pressure='148.7 bar' />
+  <sample time='17:40 min' depth='17.22 m' pressure='147.72 bar' />
+  <sample time='18:00 min' depth='16.86 m' pressure='146.86 bar' />
+  <sample time='18:20 min' depth='17.12 m' pressure='146.25 bar' />
+  <sample time='18:40 min' depth='17.28 m' pressure='145.01 bar' />
+  <sample time='19:00 min' depth='17.02 m' pressure='144.55 bar' />
+  <sample time='19:20 min' depth='17.12 m' pressure='143.39 bar' />
+  <sample time='19:40 min' depth='16.87 m' pressure='142.35 bar' />
+  <sample time='20:00 min' depth='17.05 m' pressure='141.57 bar' />
+  <sample time='20:20 min' depth='17.37 m' pressure='140.85 bar' />
+  <sample time='20:40 min' depth='17.34 m' pressure='140.16 bar' />
+  <sample time='21:00 min' depth='17.47 m' pressure='139.23 bar' />
+  <sample time='21:20 min' depth='17.45 m' pressure='138.24 bar' />
+  <sample time='21:40 min' depth='17.37 m' pressure='137.58 bar' />
+  <sample time='22:00 min' depth='16.97 m' pressure='136.78 bar' />
+  <sample time='22:20 min' depth='16.88 m' pressure='135.6 bar' />
+  <sample time='22:40 min' depth='17.03 m' pressure='134.95 bar' />
+  <sample time='23:00 min' depth='17.17 m' pressure='133.88 bar' />
+  <sample time='23:20 min' depth='17.11 m' pressure='133.21 bar' />
+  <sample time='23:40 min' depth='17.13 m' pressure='132.32 bar' />
+  <sample time='24:00 min' depth='17.12 m' pressure='131.63 bar' />
+  <sample time='24:20 min' depth='17.04 m' pressure='130.81 bar' />
+  <sample time='24:40 min' depth='16.86 m' pressure='130.33 bar' />
+  <sample time='25:00 min' depth='16.98 m' pressure='129.12 bar' />
+  <sample time='25:20 min' depth='16.86 m' pressure='128.34 bar' />
+  <sample time='25:40 min' depth='16.86 m' pressure='127.56 bar' />
+  <sample time='26:00 min' depth='16.96 m' pressure='126.87 bar' />
+  <sample time='26:20 min' depth='17.17 m' pressure='126.32 bar' />
+  <sample time='26:40 min' depth='16.74 m' pressure='125.03 bar' />
+  <sample time='27:00 min' depth='17.2 m' pressure='124.31 bar' />
+  <sample time='27:20 min' depth='17.26 m' pressure='123.65 bar' />
+  <sample time='27:40 min' depth='17.24 m' pressure='123.35 bar' />
+  <sample time='28:00 min' depth='17.31 m' pressure='122.17 bar' />
+  <sample time='28:20 min' depth='17.4 m' pressure='121.34 bar' />
+  <sample time='28:40 min' depth='17.43 m' pressure='120.7 bar' />
+  <sample time='29:00 min' depth='17.43 m' pressure='120.28 bar' />
+  <sample time='29:20 min' depth='17.43 m' pressure='119.61 bar' />
+  <sample time='29:40 min' depth='17.45 m' pressure='119.26 bar' />
+  <sample time='30:00 min' depth='17.44 m' pressure='119.04 bar' />
+  <sample time='30:20 min' depth='17.06 m' pressure='117.96 bar' />
+  <sample time='30:40 min' depth='16.59 m' pressure='117.1 bar' />
+  <sample time='31:00 min' depth='16.98 m' pressure='115.9 bar' />
+  <sample time='31:20 min' depth='16.88 m' pressure='115.17 bar' />
+  <sample time='31:40 min' depth='16.66 m' pressure='114.41 bar' />
+  <sample time='32:00 min' depth='16.65 m' pressure='113.8 bar' />
+  <sample time='32:20 min' depth='16.76 m' pressure='112.87 bar' />
+  <sample time='32:40 min' depth='17.25 m' pressure='112.23 bar' />
+  <sample time='33:00 min' depth='17.0 m' pressure='111.6 bar' />
+  <sample time='33:20 min' depth='16.59 m' pressure='110.69 bar' />
+  <sample time='33:40 min' depth='16.47 m' pressure='109.65 bar' />
+  <sample time='34:00 min' depth='16.59 m' pressure='108.94 bar' />
+  <sample time='34:20 min' depth='16.62 m' pressure='108.25 bar' />
+  <sample time='34:40 min' depth='16.98 m' pressure='107.94 bar' />
+  <sample time='35:00 min' depth='17.34 m' pressure='106.89 bar' />
+  <sample time='35:20 min' depth='17.34 m' pressure='105.79 bar' />
+  <sample time='35:40 min' depth='17.29 m' pressure='105.52 bar' />
+  <sample time='36:00 min' depth='17.26 m' pressure='104.84 bar' />
+  <sample time='36:20 min' depth='17.25 m' pressure='104.07 bar' />
+  <sample time='36:40 min' depth='17.39 m' pressure='103.01 bar' />
+  <sample time='37:00 min' depth='17.02 m' pressure='102.24 bar' />
+  <sample time='37:20 min' depth='16.87 m' pressure='101.45 bar' />
+  <sample time='37:40 min' depth='16.75 m' pressure='100.98 bar' />
+  <sample time='38:00 min' depth='16.51 m' pressure='99.94 bar' />
+  <sample time='38:20 min' depth='16.78 m' pressure='99.38 bar' />
+  <sample time='38:40 min' depth='16.93 m' pressure='98.77 bar' />
+  <sample time='39:00 min' depth='16.64 m' pressure='98.13 bar' />
+  <sample time='39:20 min' depth='16.35 m' pressure='97.1 bar' />
+  <sample time='39:40 min' depth='16.84 m' pressure='96.32 bar' />
+  <sample time='40:00 min' depth='16.93 m' pressure='95.61 bar' />
+  <sample time='40:20 min' depth='16.92 m' pressure='94.89 bar' />
+  <sample time='40:40 min' depth='16.96 m' pressure='93.88 bar' />
+  <sample time='41:00 min' depth='16.99 m' pressure='93.26 bar' />
+  <sample time='41:20 min' depth='16.96 m' pressure='92.73 bar' />
+  <sample time='41:40 min' depth='16.57 m' pressure='91.96 bar' />
+  <sample time='42:00 min' depth='16.07 m' pressure='91.15 bar' />
+  <sample time='42:20 min' depth='15.95 m' pressure='90.42 bar' />
+  <sample time='42:40 min' depth='16.24 m' pressure='89.9 bar' />
+  <sample time='43:00 min' depth='16.379 m' pressure='88.92 bar' />
+  <sample time='43:20 min' depth='16.67 m' pressure='88.2 bar' />
+  <sample time='43:40 min' depth='16.61 m' pressure='87.41 bar' />
+  <sample time='44:00 min' depth='17.17 m' pressure='86.42 bar' />
+  <sample time='44:20 min' depth='17.24 m' pressure='85.9 bar' />
+  <sample time='44:40 min' depth='17.41 m' pressure='85.16 bar' />
+  <sample time='45:00 min' depth='17.45 m' pressure='84.36 bar' />
+  <sample time='45:20 min' depth='17.2 m' pressure='83.57 bar' />
+  <sample time='45:40 min' depth='16.97 m' pressure='82.76 bar' />
+  <sample time='46:00 min' depth='17.45 m' pressure='81.8 bar' />
+  <sample time='46:20 min' depth='17.26 m' pressure='81.25 bar' />
+  <sample time='46:40 min' depth='17.35 m' pressure='80.64 bar' />
+  <sample time='47:00 min' depth='17.7 m' pressure='79.66 bar' />
+  <sample time='47:20 min' depth='17.06 m' pressure='78.83 bar' />
+  <sample time='47:40 min' depth='17.1 m' pressure='78.14 bar' />
+  <sample time='48:00 min' depth='16.99 m' pressure='77.16 bar' />
+  <sample time='48:20 min' depth='17.22 m' pressure='76.68 bar' />
+  <sample time='48:40 min' depth='17.01 m' pressure='75.75 bar' />
+  <sample time='49:00 min' depth='17.31 m' pressure='74.8 bar' />
+  <sample time='49:20 min' depth='17.39 m' pressure='74.08 bar' />
+  <sample time='49:40 min' depth='17.43 m' pressure='73.52 bar' />
+  <sample time='50:00 min' depth='16.83 m' pressure='73.01 bar' />
+  <sample time='50:20 min' depth='16.52 m' pressure='72.01 bar' />
+  <sample time='50:40 min' depth='16.59 m' pressure='71.01 bar' />
+  <sample time='51:00 min' depth='16.49 m' pressure='69.98 bar' />
+  <sample time='51:20 min' depth='16.04 m' pressure='69.34 bar' />
+  <sample time='51:40 min' depth='15.55 m' pressure='68.15 bar' />
+  <sample time='52:00 min' depth='15.03 m' pressure='67.46 bar' />
+  <sample time='52:20 min' depth='14.18 m' pressure='66.65 bar' />
+  <sample time='52:40 min' depth='12.88 m' pressure='65.84 bar' />
+  <sample time='53:00 min' depth='12.03 m' pressure='65.1 bar' />
+  <sample time='53:20 min' depth='11.19 m' pressure='64.53 bar' />
+  <sample time='53:40 min' depth='10.47 m' pressure='63.65 bar' />
+  <sample time='54:00 min' depth='9.12 m' pressure='62.93 bar' />
+  <sample time='54:20 min' depth='7.64 m' pressure='62.24 bar' />
+  <sample time='54:40 min' depth='6.79 m' pressure='61.55 bar' />
+  <sample time='55:00 min' depth='6.02 m' pressure='61.15 bar' />
+  <sample time='55:20 min' depth='5.47 m' pressure='60.67 bar' />
+  <sample time='55:40 min' depth='5.36 m' pressure='60.21 bar' />
+  <sample time='56:00 min' depth='5.49 m' pressure='59.39 bar' />
+  <sample time='56:20 min' depth='5.31 m' pressure='59.21 bar' />
+  <sample time='56:40 min' depth='5.33 m' pressure='56.0 bar' />
+  <sample time='57:00 min' depth='5.31 m' pressure='56.45 bar' />
+  <sample time='57:20 min' depth='5.28 m' pressure='56.2 bar' />
+  <sample time='57:40 min' depth='4.93 m' pressure='55.6 bar' />
+  <sample time='58:00 min' depth='4.88 m' pressure='55.3 bar' />
+  <sample time='58:20 min' depth='4.63 m' pressure='54.78 bar' />
+  <sample time='58:40 min' depth='3.75 m' pressure='54.37 bar' />
+  <sample time='59:00 min' depth='2.69 m' pressure='54.08 bar' />
+  <sample time='59:20 min' depth='1.88 m' pressure='53.87 bar' />
+  </divecomputer>
+</dive>
+</dives>
+</divelog>