| Parts per million of gas | Gas | % Correct |
|---|---|---|
| 965,000 | Carbon dioxide | 85%
|
| 35,000 | Nitrogen | 77%
|
| 12 | Helium | 70%
|
| 70 | Argon | 62%
|
| 7 | Neon | 49%
|
| 150 | Sulfur dioxide | 34%
|
| 17 | Carbon monoxide | 32%
|
| 20 | Water vapour | 28%
|