Receive 1.333 TFP for each day of the leave for a total of 40.0 TFP (30 days in January bid month)
Feb – Dec 2015 your 480 is credited the 40 TFP (for January staffing leave Jan 1st – Jan 30th) and requires only 440 TFP excluding vacation and sick leave.
There is an additional provision that requires you have paid time in a month to meet the 1/12 requirement of that month, otherwise your vacation is reduced. If you are taking the leave in January you will need to have a trip that originates in December 2014 and flying terminates in January 2015. This will ensure you meet the 1/12 requirement for the full vacation accrual.
In TA2 please read over Section 14.A.4. and Section 15.M. and 15.N. These provisions discuss what occurs with leaves with or without coordination and the sections affected by those provisions.