Within these data, there were a total of 18,791 plant macro-remains in which 3,856 cereals (rice, millets, etc.) were identified, then the proportion of cereals in macrobotanical remains was 21% (3,856/18,791×100%) during 9~6 ka cal BP. There were 15 sites in which macro-remains or starch grains of common millet were found; Cishan, Tanghu, and Xihe sites had macro-botanical and/or starch data without common millet, which was found in phytolith data of each site.
Source: wiktionary