Table:
text: 2007–08 Football Conference
Topscorers in Order of League Goals
Topscorers in Order of League Goals
Player Club League Play_offs FA_Cup FA_Trophy Total
Stuart Fleetwood Forest Green Rovers 28 0 6 2 36
Steve Morison Stevenage Borough 22 0 0 1 23
Colin Little Altrincham 21 0 1 1 24
John Grant Aldershot Town 20 0 0 5 25
Jon Shaw Halifax Town 20 0 1 4 25
Daryl Clare Burton Albion 19 3 2 3 24
Tim Sills Torquay United 19 1 0 2 22
Richard Logan Exeter City 18 1 0 0 19
Chris Zebroski Torquay United 18 2 0 0 20
Matt Tubbs Salisbury City 18 0 0 0 18
Scott Rendell Cambridge United 17 0 4 2 19

Question: What was the 2007-08 Football Conference average total for Tim Sills as a player?

Question: What mean total had a league number of 18, Richard Logan as a player and a play-off number less than 1 for the 2007-08 football conference?