On 9 October 2005, after several months of measurement and calculation, the Chinese Academy of Sciences and State Bureau of Surveying and Mapping announced the height of Everest as with accuracy of ±, claiming it was the most accurate and precise measurement to date. This height is based on the highest point of rock and not the snow and ice covering it. The Chinese team measured a snow-ice depth of , which is in agreement with a net elevation of . An argument arose between China and Nepal as to whether the official height should be the rock height (8,844 m, China) or the snow height (8,848 m, Nepal). In 2010, both sides agreed that the height of Everest is 8,848 m, and Nepal recognises China's claim that the rock height of Everest is 8,844 m.