An agricultural research team is testing crop growth inside a sealed biosphere chamber. The table below shows the percentages of different gases in the biosphere chamber's atmosphere compared to a standard sample of clean dry air.
| Gas | Percentage in biosphere chamber (%) | Percentage in clean dry air (%) |
|---|---|---|
| Nitrogen | 75.15 | 78.08 |
| Oxygen | 18.40 | 20.95 |
| Carbon dioxide | 4.25 | 0.04 |
| Water vapour and argon | WWW | 0.93 |
Calculate the percentage W W\,W of water vapour and argon in the biosphere chamber's atmosphere.