Stacked module effectiveness:
1st module = 100.000%
2nd module = 86.9119842%
3rd module = 57.1037996%
4th module = 28.2469117%
5th module = 10.5988834%
6th module = 2.9989473%

Damage Inflicted - Shoot:
Amarr - EM47% TH42% - EM / TH
Angels - EX62% KI22% - EX
Blood Raiders - EM50% TH48% - EM
Caldari - KI51% TH48% - KI / TH
E0M - KI70% TH29% - EM / KI
Gallente - KI60% TH39% - TH
Guristas - KI79% TH18% - KI / TH
Mercenaries - TH45% KI25% EX15% EM15% - TH / KI
Minmatar - EX50% KI31% EM12% - TH
Mordu's Legion - KI60% TH40% - KI (EX(BS))
Rogue Drones - TH42 KI32 EM22 or EX41 KI21 T35 - EM
Sansha - EM53% TH47% - EM
Serpentis - TH55% KI45% - KI

ECM types to use:
Spatial Dest. v Caldari (Gravimetric)
White Noise v Amarr (Radar)
Ion Field v Gallente (Magnetometric)
Phase Inverter v Minmatar (Ladar)