(17075,2,7,'Vis\'kag the Bloodletter',32197,4,0,1,676334,135266,13,-1,-1,74,60,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,100,187,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2600,0,0,21140,2,0,1.3,-1,0,-1,0,0,0,0,-1,0,-1,0,0,0,0,-1,0,-1,0,0,0,0,-1,0,-1,0,0,0,0,0,0,0,1,'',0,0,0,0,0,1,3,0,0,0,105,0,0,0,'',65,0,0,0,0,0,1)
This is the sql entry for Vis'kag in the open source database. The part of it that deals with the proc is " 21140,2,0,1.3,-1,0 ": 21140 is the spell ID of the proc. The 1.3 that follows 3 entries to the right is the proc per minute value. For a 2.6 speed weapon, 1.3 PPM corresponds to a proc% rate of 5.63%. This roughly corresponds to adding an average of 5.2 DPS making the total about 60.4 DPS.