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:
| Season | # of Episodes | Timeslot | Season Premiere | Season Final | Peak Audience | Average Audience | Average Nightly Rank | Average Weekly Rank | Average Yearly Ranking |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1.0 | 22.0 | Tuesday 8:30pm | 26 August 2008 | 24 March 2009 | 2067000.0 | 1904364.0 | No. 1 | No. 2 | No. 1 |
| 2.0 | 22.0 | Tuesday 8:30pm | 30 June 2009 | 24 November 2009 | 2185000.0 | 1881000.0 | No. 1 | No. 2 | No. 2 |
| 3.0 | 22.0 | Tuesday 8:30pm | 29 June 2010 | 16 November 2010 | 2335000.0 | 1894000.0 | No. 1 | No. 2 | No. 1 |
| 4.0 | 22.0 | Tuesday 8:30pm | 8 February 2011 | 20 March 2012 | 2011000.0 | 1803000.0 | No. 2 | No. 3 | No. 3 |
| 5.0 | 22.0 | Tuesday 8:30pm | 17 April 2012 | 16 April 2013 | 1762000.0 | 1509000.0 | No. 4 | No. 11 | No. 16 |
Question:
How many were the show's average weekly ranking when it reached No. 2 in average nightly ranking?
Answer:
1.0