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 | Timeslot | Season premiere | Season finale | TV season | Rank | U.S. viewers (in millions) | Rating (adults 18–49) |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1.0 | Wednesday 9/8c Monday 8/7c | September 19, 2007 | May 19, 2008 | 2007–08 | #196 | 2.35 | 1.2 |
| 2.0 | Monday 8/7c | September 1, 2008 | May 18, 2009 | 2008–09 | #168 | 2.48 | 1.4 |
| 3.0 | Monday 9/8c | September 14, 2009 | May 17, 2010 | 2009–10 | #135 | 2.02 | 1.1 |
| 4.0 | Monday 9/8c | September 13, 2010 | May 16, 2011 | 2010–11 | #139 | 1.64 | 0.8 |
| 5.0 | Monday 8/7c | September 26, 2011 | May 14, 2012 | 2011–12 | #188 | 1.18 | 0.6 |
Question:
How many tv series had an adult rating of 1.2?
Answer:
1.0