Table:
text: 1959 Portuguese Grand Prix
Classification
Classification
Driver Constructor_ Laps Time_Retired Grid
Stirling Moss Cooper - Climax 62 2:11:55.41 1
Masten Gregory Cooper - Climax 61 + 1 Lap 3
Dan Gurney Ferrari 61 + 1 Lap 6
Maurice Trintignant Cooper - Climax 60 + 2 Laps 4
Harry Schell BRM 59 + 3 Laps 9
Roy Salvadori Aston Martin 59 + 3 Laps 12
Ron Flockhart BRM 59 + 3 Laps 11
Carroll Shelby Aston Martin 58 + 4 Laps 13
Tony Brooks Ferrari 57 + 5 Laps 10
Mário de Araújo Cabral Cooper - Maserati 56 + 6 Laps 14
Bruce McLaren Cooper - Climax 38 Transmission 8

Question: What is Masten Gregory's average lap in the 1959 Portuguese Grand Prix?