1."X" is the percentage for a particular county of the total amount of use fuel consumed in the entire state for a month.
2."A" is the number of county highway miles in the county divided by the total number of county highway miles in all counties within the state.
3."B" is the total unincorporated county population in the county divided by the total unincorporated county population in all counties within the state.
4."C" is the percent of use fuel consumed in the county that was used to distribute highway user revenue funds in June 1985.
Ariz. Admin. Code § R17-1-347