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:
| Heat Rank | Lane | Swimmer | Country | Time | Overall Rank |
| --- | --- | --- | --- | --- | --- |
| 1.0 | 4.0 | Sergiy Breus | Ukraine | 23.61 | 3 |
| 2.0 | 1.0 | Albert Subirats Altes | Venezuela | 23.73 | 6 |
| 3.0 | 5.0 | Matti Rajakylä | Finland | 23.98 | 10 |
| 4.0 | 2.0 | Ryan Pini | Papua New Guinea | 24.02 | T12 |
| 4.0 | 6.0 | Ryo Takayasu | Japan | 24.02 | T12 |
| 6.0 | 8.0 | Rafael Muñoz Pérez | Spain | 24.21 | 21 |
| 7.0 | 7.0 | Evgeny Korotyshkin | Russia | 24.36 | 24 |
| 8.0 | 3.0 | ZHOU Jiawei | China | 24.41 | T26 |
Question:
Tell me the total number of time for heat rank of 1
Answer:
1.0