GAC invoice all as Detention.

Calculation based on Discharge date to MT return date move of containers.

Standard Free time = 8 days but GAC also upload Free time details received from ONE.

GAC are using what they call a 'Jumping Slab or Jumping Tariff' when the calculate Detention 

See flwg document for examples:

Uniteam Guide to calculation:

GAC description of Detention calculation with Jumping Slab: