User blog comment:PitchBlack696/Blog: Admins Board/@comment-765166-20140108014742/@comment-184612-20140108022238

Excerpts from the MH3U guide;

"Damage Chart: How much damage a monster incurs from a weapon. The numbers are separated by type of damage and as a percentage of a weapon’s attack power. Multiple numbers in a cell indicate that a monster’s defense changes when it is enraged. As an example, Arzuros’s body has an Impact defense rating of 50/30, which means that he suffers 50% of a Hammer attack’s damage on his body, but only 30% when he’s enraged."

"Anger Effects: The boosts (or penalties) a monster gains when it enters raged state. The more “+” marks, the more that stat is enhanced. Likewise with “–” marks. If “=” is listed, then the stat remains the same during rage state."

Also mentions them being "raged"