Aft-1G is the value accumulated from the difference between the actual value of the calculated values with Ft Ft using a collection of acts in the month t-1 (cents/unit)
Aft-1G is caused by the cumulative difference between the values calculated Ft Ft truth to the charge of the business in the month t-1 (cents / kWh).
Aft-1G is accumulated value resulting from the differences between the Ft calculated. With the Ft use charge of production enterprise, in the month of T-1 (money / unit)