CA Penal Code Section 1233.5

If data of sufficient quality and of the types required for the implementation of this chapter are not available to the Director of Finance, the Director of Finance, in consultation with the Department of Corrections and Rehabilitation, the Joint Legislative Budget Committee, and Judicial Council, shall use the best available data to estimate the statewide performance incentive payments and county performance incentive payments utilizing a methodology that is as consistent with that described in this chapter as is reasonably possible.