Study the table below, which shows climate and hydrological data for a river drainage basin in North Yorkshire, UK.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average monthly temperature (°C) | 4 | 5 | 7 | 9 | 12 | 15 | 17 | 16 | 14 | 11 | 7 | 5 |
| Total monthly river discharge (106 m310^6\text{ m}^3106 m3) | 45 | 42 | 38 | 28 | 19 | 12 | 8 | 10 | 15 | 27 | 39 | 47 |
Calculate the total annual river discharge for this drainage basin.