UESP display type. "%" → value is in percentage points (e.g. 20 = 20%, i.e. 0.2 on the final stat). "" → absolute value in the same unit system as the stat.
statId
string
Affected stat ID. Ex: "SpellCrit", "WeaponDamage", "CritDamage"
value
number
Numeric effect value (already in the stat's unit).