Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Year | Entrant | Chassis | Engine | Points |
| --- | --- | --- | --- | --- |
| 1957.0 | J B Naylor | Cooper T43 F2 | Climax Straight-4 | 0.0 |
| 1958.0 | J B Naylor | Cooper T45 F2 | Climax Straight-4 | 0.0 |
| 1959.0 | J B Naylor | JBW | Maserati Straight-4 | 0.0 |
| 1960.0 | J B Naylor | JBW | Maserati Straight-4 | 0.0 |
| 1961.0 | J B Naylor | JBW | Climax Straight-4 | 0.0 |
Question:
What is the average Points when the engine was a climax straight-4 earlier than 1958?
Answer:
0.0