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:
| Episode # | Series # | Title | Director | Writer | Original airdate | Viewers (in millions) |
| --- | --- | --- | --- | --- | --- | --- |
| 11.0 | 2.0 | "Puppy Love" | Michael Owen Morris Category:Articles with hCards | Len Collin Category:Articles with hCards | 2 Cannot handle non-empty timestamp argument! 1999 | 8.23 |
| 12.0 | 3.0 | "Destination Unknown" | Jim Goddard Category:Articles with hCards | Steve Bennett Category:Articles with hCards | 9 Cannot handle non-empty timestamp argument! 1999 | 8.13 |
| 16.0 | 7.0 | "Chasing the Dragon" | Julie Edwards Category:Articles with hCards | Sam Wheats Category:Articles with hCards | 7 Cannot handle non-empty timestamp argument! 2000 | 8.63 |
| 20.0 | 11.0 | "Trust" | Jim Goddard Category:Articles with hCards | Niall Leonard Category:Articles with hCards | 3 Cannot handle non-empty timestamp argument! 2000 | 9.67 |
| 24.0 | 15.0 | "Taking It on the Chin" | Michael Owen Morris Category:Articles with hCards | Jeff Povey Category:Articles with hCards | 2 Cannot handle non-empty timestamp argument! 2000 | 9.25 |
Question:
What is the original airdate of the episode that had 8.23 million viewers?
Answer:
2 Cannot handle non-empty timestamp argument! 1999