Signals:

Unknown = Complex or Anomaly
Ladar = Gas Cloud
Radar = Hacking
Magnetic = Archiology / Salvage
Gravimetric = Hidden Belt


Security status: Empire restrictions-

Below -2 = not in 1.0 sec systems
Below -2.5 = not in 0.9 sec systems
Below -3 = not in 0.8 sec systems
Below -3.5 = not in 0.7 systems
Below -4 = not in 0.6 systems
Below -4.5 = not in 0.5 systems
-5 or below = KOS in all empire.

Best Damage to NPCs
EM primary, Thermal secondary: Amarr, Blood Raiders, Sanshas Nation
Thermal primary, Kinetic secondary: Gallente, Serpentis
Kinetic primary, Therm secondary: Caldari, Guristas, Mordos legion, EoM
Explosive primary, Kin secondary: Minmatar, Angels
All four roughly equal: Drones, Mercenaries

Unknown = Complex or Anomaly
Radar - Hacking Site (Code Breaker)
Magnetometric - Archaeologic Site (Analyzer)
Ladar - Gas Cloud (Harvester)
Gravimetric - Asteroid (Mining).