Sif's Ascension uses this spreadsheet to determine pool APRs: https://docs.google.com/spreadsheets/d/1zQgnMYh-1hfLeK0qENIy5zAlGj6c1GGrgMnumARdcnw/edit#gid=659743634
More information about Sif's Ascension: https://commonwealth.im/sifchain/discussion/4302-sifs-ascension-parameter-calculation-proposal
Max multiplier: the highest multiplier for all pools. Current tokens that have the max multiplier are: ATOM, ETH, JUNO, USDC, SCRT
Base multiplier: the default multiplier for incentivized pools.
0 multiplier: the pool will not receive any incentives.