user: Question: What mean total had a league number of 18, richard logan as a player, and a play-offs number smaller than 1?
Columns: ['Player', 'Club', 'League', 'Play-offs', 'FA Cup', 'FA Trophy', 'Total']
Types: ['text', 'text', 'real', 'real', 'real', 'real', 'real']
Sample row: ['Stuart Fleetwood', 'Forest Green Rovers', 28.0, 0.0, 6.0, 2.0, 36.0]
SQL:

assistant: SELECT AVG("Total") FROM "Table" WHERE "League" = 18.0 AND "Player" = 'richard logan' AND "Play-offs" < 1.0;