Similar to イロレーティング

Kinsey scale

Glicko rating system

Forsyth–Edwards Notation

Average revenue per user

Source lines of code

New York Heart Association Functional Classification

Power–speed number

TrueSkill

UFC rankings

Protein digestibility corrected amino acid score

Threshold dose

Whipple's index

Pedersen index

Sunspot number

Recovery point objective

Cook Partisan Voting Index

Timekeeper