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:
| Date | Opponent | Score | Loss | Attendance |
| --- | --- | --- | --- | --- |
| June 1 | @ Indians | 6-5 | White (2-1) | 17,136 |
| June 2 | @ Indians | 5-3 | Betancourt (2-4) | 18,098 |
| June 4 | @ Yankees | 7-6 | Powell (1-1) | 49,372 |
| June 5 | @ Yankees | 8-1 | Lieber (4-3) | 51,910 |
| June 6 | @ Yankees | 2-1 | Drese (2-3) | 54,092 |
| June 7 | Pirates | 6-5 | Johnston (0-3) | 25,286 |
| June 8 | Postponed | Postponed | Postponed | Postponed |
| June 9 | Postponed | Postponed | Postponed | Postponed |
| June 10 | Pirates | 9-7 | Meadows (2-2) | N/A |
| June 10 | Pirates | 10-4 | Fogg (3-5) | 27,219 |
| June 11 | Cardinals | 12-7 | Dominguez (1-2) | 32,962 |
| June 12 | Cardinals | 7-2 | Carpenter (7-2) | 42,173 |
| June 13 | Cardinals | 3-2 | Dickey (4-6) | 41,087 |
| June 15 | @ Reds | 5-4 | Ramirez (3-3) | 36,501 |
| June 16 | @ Reds | 7-4 | Francisco (1-1) | 39,114 |
| June 17 | @ Reds | 4-3 | Drese (3-4) | 40,383 |
| June 18 | @ Marlins | 8-1 | Penny (6-5) | 20,506 |
| June 19 | @ Marlins | 7-6 | Willis (6-4) | 31,021 |
| June 20 | @ Marlins | 4-2 | Koch (0-1) | 23,643 |
| June 22 | Mariners | 10-2 | Nageotte (1-3) | 32,364 |
| June 23 | Mariners | 6-3 | Franklin (3-5) | 30,418 |
| June 24 | Mariners | 9-7 | Moyer (6-3) | 26,266 |
| June 25 | Astros | 3-1 | Miller (7-7) | 46,088 |
| June 26 | Astros | 8-7 | Miceli (3-3) | 40,131 |
| June 27 | Astros | 1-0 | Drese (4-5) | 43,328 |
| June 28 | @ Mariners | 8-5 | Franklin (3-6) | 28,253 |
| June 29 | @ Mariners | 4-3 | Benoit (2-3) | 34,844 |
| June 30 | @ Mariners | 9-6 | Nageotte (1-4) | 32,754 |
Question:
When the game had a loss of Koch (0-1) what was the attendance?
Answer:
23643.0