2017 Honda Civic EX-T at 24/12k

Year: 2017
Make, Model, and Trim: Honda Civic EX-T
Months/Annual Mileage: 36/12K
Months/Annual Mileage: 24/12K
Zip Code: 78751

From Jan 27th post by Michael, the 36/12k --> Civic Sedan EX-T CVT: 62% RV, .00080 MF in another zip.

How much does zip code affect?

What’s the 24/12k ?