Minecraft wiki entry for Other_data_format, associated text: : Parent tag.
 Id: The numerical effect ID.
 Amplifier: The potion effect level. 0 is level 1.
 Duration: The number of ticks before the effect wears off.
 DurationEasy: Duration for Easy mode.
 DurationNormal: Duration for Normal mode.
 DurationHard: Duration for Hard mode.
 Ambient: True if this effect is provided by a Beacon and therefore should be less intrusive on screen.
 ShowParticles: True if particles are shown.
 DisplayOnScreenTextureAnimation: Unknown.