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:
| Home team | Home team score | Away team | Away team score | Venue | Crowd | Date |
| --- | --- | --- | --- | --- | --- | --- |
| Melbourne | 17.9 (111) | North Melbourne | 23.18 (156) | MCG | 23261.0 | 2 June 1979 |
| Fitzroy | 18.15 (123) | St Kilda | 11.12 (78) | Junction Oval | 14963.0 | 2 June 1979 |
| Collingwood | 19.18 (132) | Richmond | 10.20 (80) | Victoria Park | 31474.0 | 2 June 1979 |
| Hawthorn | 16.12 (108) | Essendon | 17.14 (116) | Princes Park | 24875.0 | 2 June 1979 |
| Footscray | 11.12 (78) | Carlton | 18.19 (127) | Western Oval | 21362.0 | 2 June 1979 |
| Geelong | 18.15 (123) | South Melbourne | 17.8 (110) | VFL Park | 15750.0 | 2 June 1979 |
Question:
What was the crowd size when the visiting team scored 23.18 (156)?
Answer:
1.0