In our model, staking ratio ( amount of tokens staked / Circulating Supply ) is inversely proportional to the Rewards. If set free, just taking in consideration these two variables, at lower tail, the APY could be explosive. So, instead of tending to infinite, we designed it to have a cap at 10%. This way, at the staking ratios, it tends to 10% and at high staking ratios it tends to 0%, that's what we call the emission band. The staking ratio changes over time so does emission rate - inside the bands.