Table 1. Sites, locations, and weights of selected samples.

Archaeological sites	Sample code	Location	Cultural period	Other dating materials	Soil dry weight (g)
Yuancun	YC	Henan province	Yangshao	Charcoal	25.024
Yingyang	YY	Henan province	Yangshao	Charcoal	135.645
Wuluoxipo	WLXP	Henan province	Peiligang	Charcoal	137.222
Xinglefang	XLF	Shanxi province	Miaodigou	Charcoal	80.16
Huxi	HX	Zhejiang province	Shangshan	Plant residue	102.4
Tianluoshan	TLS-2	Zhejiang province	Hemudu	Seeds	70.513
Tianluoshan	TLS-3	Zhejiang province	Hemudu	Seeds	56.75