A student investigates the effect of temperature on the rate of yeast respiration. They measure the volume of carbon dioxide gas (in cm3\text{cm}^3cm3) produced in five minutes. The table shows their results.
| Temperature | Repeat 1 | Repeat 2 | Repeat 3 |
|---|---|---|---|
| Low | 15 | 14 | 16 |
| Medium | 28 | 27 | 29 |
| High | 42 | 45 | 23 |
Which value could be classed as anomalous (an outlier)?
14
23
28
45