Table:
text: List of rampage killers
Workplace killings
Workplace killings
Perpetrator Date_ Year_ Location_ Country Killed Injured
Sanurip , 36 04.15 April 15 1996 Timika Airport Indonesia 16 11
Chelakh, Vladislav , 19 05.27 May 27/28 2012 Arkankergen frontier post Kazakhstan 15 0
Sherrill, Patrick Henry , 44 08.20 Aug. 20 1986 Edmond , OK U.S. 14 06 6
Hasan, Nidal Malik , 39 11.05 Nov. 5 2009 Fort Hood , TX U.S. 13 32
Barton, Mark Orrin , 44 07.27 July 27–29 1999 Atlanta , GA U.S. 12 13
Alexis, Aaron , 34 09.16 Sep. 16 2013 Washington, D.C. U.S. 12 3
Lz 04.32 1979.9 Fz Tx 4.9 0.9

Question: What is the lowest death toll when the perpetrator is "Sherrill, Patrick Henry, 44" among the list of workplace homicides by gunman?