410 IAC 12.1-1-10
410 IAC 12.1-1-10 "Octane index" defined
Cite as Ind. Admin. Code tit. 410, r. 12.1-1-10
Sec. 10. "Octane index" means the number obtained by adding the research octane number and the motor octane number and dividing the
sum by two (2).