Study Table 1, which shows climate data for a UK temperate deciduous forest ecosystem study area.
| Jan | Feb | Mar | Apr | May | June | Jul | Aug | Sept | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average monthly temperature (°C) | 4.1 | 4.6 | 6.9 | 9.3 | 12.8 | 15.4 | 17.9 | 17.3 | 14.6 | 11.2 | 7.4 | 4.7 |
| Average monthly precipitation (mm) | 76 | 58 | 62 | 54 | 59 | 63 | 51 | 65 | 70 | 83 | 88 | 81 |
Calculate the mean of the average monthly temperatures shown in Table 1.
Answer to one decimal place.
You must show your working.