Table:
text: Tony Maggs
Complete Formula One World Championship results
Complete Formula One World Championship results
Year_ Entrant Chassis Engine Points
1961 Louise Bryden-Brown Lotus 18 Climax Straight-4 0
1962 Cooper Car Company Cooper T55 Climax Straight-4 13
1962 Cooper Car Company Cooper T60 Climax V8 13
1963 Cooper Car Company Cooper T66 Climax V8 9
1964 Scuderia Centro Sud BRM P57 BRM V8 4
1965 Reg Parnell Racing Lotus 25 BRM V8 0

Question: What is the average year with chassis equal to Cooper T60 at Tony Maggs?

Question: Which chassis has a Cooper Car Company competitor and a year of 1963 for Tony Maggs?

Question: Which competitor under Tony Maggs has a Climax Straight-4 engine and scores greater than 0?