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 | Athlete | Nationality | Time | React |
| --- | --- | --- | --- | --- | --- |
| 1.0 | 3.0 | Brian Dzingai | Zimbabwe | 20.25 | 0.172 |
| 2.0 | 5.0 | Christian Malcolm | Great Britain | 20.42 | 0.178 |
| 3.0 | 4.0 | Christopher Williams | Jamaica | 20.53 | 0.166 |
| 4.0 | 8.0 | Shinji Takahira | Japan | 20.58 | 0.175 |
| 5.0 | 2.0 | Amr Ibrahim Mostafa Seoud | Egypt | 20.75 | 0.172 |
| 6.0 | 9.0 | Thuso Mpuang | South Africa | 20.87 | 0.166 |
| 7.0 | 6.0 | Daniel Grueso | Colombia | 21.15 | 0.232 |
| 8.0 | 7.0 | Arnaldo Abrantes | Portugal | 21.46 | 0.173 |
Question:
What is Christian Malcolm´s highest react when his time was below 20.58?
Answer:
0.178