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 | Ground | Crowd | Date | Report |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Melbourne | 5.11 (41) | Geelong | 24.13 (157) | MCG | 34610.0 | Friday, 8 August | AFL.com.au |
| Carlton | 18.24 (132) | Port Adelaide | 9.12 (66) | Telstra Dome | 29696.0 | Saturday, 9 August | AFL.com.au |
| Hawthorn | 16.14 (110) | Brisbane Lions | 5.11 (41) | Aurora Stadium | 19929.0 | Saturday, 9 August | AFL.com.au |
| Collingwood | 14.13 (97) | St Kilda | 12.11 (83) | MCG | 52135.0 | Saturday, 9 August | AFL.com.au |
| Sydney | 17.10 (112) | Fremantle | 15.18 (108) | SCG | 20846.0 | Saturday, 9 August | AFL.com.au |
| North Melbourne | 21.10 (136) | Western Bulldogs | 18.8 (116) | Telstra Dome | 31957.0 | Sunday, 10 August | AFL.com.au |
| Adelaide | 16.12 (108) | Richmond | 6.9 (45) | AAMI Stadium | 37562.0 | Sunday, 10 August | AFL.com.au |
Question:
What's the maximum crowd when scg is the ground?
Answer:
20846.0