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:
| Rank | Lane | Name | Nationality | Time |
| --- | --- | --- | --- | --- |
| 1.0 | 4.0 | Ágnes Kovács | Hungary | 2:24.03 |
| 2.0 | 5.0 | Qi Hui | China | 2:24.21 |
| 3.0 | 2.0 | Olga Bakaldina | Russia | 2:25.41 |
| 4.0 | 3.0 | Masami Tanaka | Japan | 2:26.24 |
| 5.0 | 6.0 | Amanda Beard | United States | 2:26.62 |
| 6.0 | 1.0 | Christin Petelski | Canada | 2:29.43 |
| 7.0 | 7.0 | Rebecca Brown | Australia | 2:29.90 |
| 8.0 | 8.0 | Alicja Pęczak | Poland | 2:30.02 |
Question:
What is the average lane for china?
Answer:
5.0