Study Table 1, which shows climate data for a temperate deciduous forest ecosystem study area in the UK.
| Jan | Feb | Mar | Apr | May | June | Jul | Aug | Sept | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average monthly temperature (°C) | 3.8 | 4.3 | 6.5 | 9.2 | 12.8 | 15.6 | 17.9 | 17.4 | 14.5 | 10.8 | 7.4 | 5.6 |
| Average monthly precipitation (mm) | 74 | 58 | 62 | 51 | 55 | 63 | 59 | 67 | 71 | 82 | 85 | 79 |
Calculate the mean of the average monthly temperatures shown in Table 1.
Answer to one decimal place.
You must show your working.