When driver peter gethin have one grid less than 25, what the average number lap?
Driver Constructor Laps Time/Retired Grid
1973 Canadian Grand Prix
1122596
text text real text real
2-1122596-1
Classification
Classification
Peter Revson McLaren - Ford 80 1:59:04.083 2
Emerson Fittipaldi Lotus - Ford 80 + 32.734 5
Jackie Oliver Shadow - Ford 80 + 34.505 14
Jean-Pierre Beltoise BRM 80 + 36.514 16
Jackie Stewart Tyrrell - Ford 79 + 1 Lap 9
Howden Ganley Iso Marlboro - Ford 79 + 1 Lap 22
James Hunt March - Ford 78 + 2 Laps 15
Carlos Reutemann Brabham - Ford 78 + 2 Laps 4
Mike Hailwood Surtees - Ford 78 + 2 Laps 12
Chris Amon Tyrrell - Ford 77 + 3 Laps 11
Wilson Fittipaldi Brabham - Ford 77 + 3 Laps 10
Rolf Stommelen Brabham - Ford 76 + 4 Laps 18
Denny Hulme McLaren - Ford 75 + 5 Laps 7
Tim Schenken Iso Marlboro - Ford 75 + 5 Laps 24
Arturo Merzario Ferrari 75 + 5 Laps 20
Graham Hill Shadow - Ford 73 + 7 Laps 17
George Follmer Shadow - Ford 73 + 7 Laps 13
Carlos Pace Surtees - Ford 72 + 8 Laps 19
Jean-Pierre Jarier March - Ford 71 Not classified 23
Rikky von Opel Ensign - Ford 68 Not classified 26
Niki Lauda BRM 62 Transmission 8
Jody Scheckter McLaren - Ford 32 Collision 3
François Cevert Tyrrell - Ford 32 Collision 6
Mike Beuttler March - Ford 20 Engine 21
Ronnie Peterson Lotus - Ford 16 Suspension 1
Peter Gethin BRM 5 Oil Pump 25
SELECT AVG Laps FROM table WHERE Driver = peter gethin AND Grid < 25
peter gethin 25