Surprisingly, I found out that the undead mobs had variable experience values assigned to them.
Exp 1 means the highest experience value the mob can have.
Exp 2 means a lower experience value the mob can have.
Exp 3 means an even lower experience value the mob can have.
Note: This is correct as of patch R38.
|Monster Experience Table|
|Location: Deep Ravenswood|
|Exp 1||Exp 2||Exp 3|
|Hardened Skeleton Mage||2050||1025||-|
|Hardened Skeleton Archer||2000||1000||-|
|Hardened Skeleton Footman||2000||1000||-|