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:
| Game | December | Opponent | Score | Record |
| --- | --- | --- | --- | --- |
| 22.0 | 2.0 | Toronto Maple Leafs | 4 - 2 | 7-10-5 |
| 23.0 | 5.0 | Chicago Black Hawks | 2 - 2 | 7-10-6 |
| 24.0 | 8.0 | @ Toronto Maple Leafs | 0 - 0 | 7-10-7 |
| 25.0 | 9.0 | Detroit Red Wings | 4 - 2 | 8-10-7 |
| 26.0 | 13.0 | @ Detroit Red Wings | 2 - 1 | 8-11-7 |
| 27.0 | 15.0 | @ Toronto Maple Leafs | 2 - 1 | 8-12-7 |
| 28.0 | 16.0 | Montreal Canadiens | 4 - 2 | 9-12-7 |
| 29.0 | 21.0 | @ Chicago Black Hawks | 3 - 2 | 10-12-7 |
| 30.0 | 23.0 | Toronto Maple Leafs | 3 - 1 | 10-13-7 |
| 31.0 | 25.0 | @ Detroit Red Wings | 8 - 1 | 10-14-7 |
| 32.0 | 27.0 | Chicago Black Hawks | 3 - 2 | 11-14-7 |
| 33.0 | 29.0 | @ Montreal Canadiens | 6 - 3 | 11-15-7 |
| 34.0 | 31.0 | Detroit Red Wings | 1 - 0 | 11-16-7 |
Question:
What is average December when game is 30?
Answer:
23.0