Who - Weak Against - Damage Dealt

Blood Raider --- EM/Thermal --------------- EM
Guristas ------- Kinetic/Thermal ------------ Kinetic
Sanshas ------- EM/Thermal --------------- EM
Serpentis ------ Thermal/Kinetic ------------ Kinetic
Angel. --------- All Resis (pri. Expl. ,Kin.) --- Explosive
Kanid Kingdom - EM / Thermal
Mordus -------- Kinetic/Thermal ------------ Kinetic
Maru = EM / Thermal
Rogue Drones -- All Resis (pri. Expl. kin) ---- EM
Mercenary ----- All Resis (pri. EM, Therm) -- Thermal
Minmatar. ------ All Resis ----------------- Thermal (sec. Explosive)
Gallente. ------- Kinetic/Thermal (sec..EM) --- Thermal
Amarr --------- EM/Thermal. -------------- Thermal
Caldari -------- Kinetic/Thermal ------------ Kinetic
Odamian = Kinetic / Thermal
Rogue Pirate - EM / Kinetic / Explosive
Thukker Tribe - EM / Thermal / Explosive
Zazzmatazz - EM / Kinetic / Thermal / Explosive

Stacking penalties
f(1) = 1
f(2) = 0.8708860
f(3) = 0.5705831
f(4) = 0.2829552