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:
| Country | Chart | Period | Peak position | Sales |
| --- | --- | --- | --- | --- |
| South Korea | Monthly Chart | July 2006 | #16 | 161,452 |
| South Korea | Monthly Chart | August 2006 | #1 | 40,440 |
| South Korea | Monthly Chart | September 2006 | #21 | 8,185 |
| South Korea | Monthly Chart | October 2006 | #24 | 3,358 |
| South Korea | Yearly Chart | 2006 | #3 | 215,641 |
| Taiwan | G-Music J-Pop/K-Pop Chart | Week 40 (6 - 12 October 2006) | #5 | 2.68% |
| Taiwan | Five Music J-Pop/K-Pop Chart | Week 41 (6 - 12 October 2006) | #1 | 9.93% |
Question:
Name the period for south korea with peak position of #1
Answer:
August 2006