The Fate Ladder

The difficulty later in Fate Accelerated for convenience

+8 Legendary

+7 Epic

+6 Fantastic

+5 Superb

+4 Great

+3 Good

+2 Fair

+1 Average

+0 Mediocre

-1 Poor

-2 Terrible

Source: https://fate-srd.com/fate-core/taking-action-dice-ladder