The formula
ECC = Capacity × Receptivity
Capacity reflects current load: active initiatives, recent reorg events, tenure adjustments. Receptivity reflects behavioral mode and recent pulse data. Both are reported on a 0 to 100 scale, and ECC inherits the same scale.
A team with high capacity and low receptivity looks available on paper and is not. A team with low capacity and high receptivity is willing but already full. ECC catches both states with one number.