4 Pan Evaporation Stations and Their Associated Thiessen Polygons
| # | Pan Evaporation Station | 1969 | 1970 | 1971 | 1972 | 1973 | 1974 |
| 1 | Fengshuba | 1266.5 | 1099.5 | 1315.8 | 1155.4 | 1056.5 | 1399.2 |
| 2 | Shuntian | 1335.7 | 1163.3 | 1266.7 | 1153.8 | 1062.9 | 1222.3 |
| 3 | Xinfengjiang (dam) | 1328.8 | 1518.6 | 1384.4 | 1316.5 | 1266.9 | 1404.3 |
| 4 | Jiuzhou | 1335.7 | 1327.3 | 1789.5 | 1750.5 | 1586.6 | 1834.3 |
Annual Total Pan Evaportaion in mm/year