Table 1.

GCs for Northeast Thailand

Site	Phase	Dates	Sample size	Unadjusted GCs	Adjusted GCs
(1)	(2)	(3)	(4)	(5)	(6)
Ban Kao	Neolithic	2000–1250 BC	27	0.340	0.310
Khok Charoen	Neolithic	1500–1150 BC	22	0.477	0.435
Khok Phanom Di	Neolithic	2000–1600 BC	53	0.363	0.329
Ban Non Wat	Neolithic 1	1800–1250 BC	14	0.524	0.478
Ban Non Wat	Neolithic 2	1250–1050 BC	26	0.532	0.484
Ban Non Wat/Ban Lum Khao	BA2	900–800 BC	43	0.724	0.657
Ban Non Wat	BA 3	900–800 BC	25	0.596	0.542
Ban Non Wat	BA 4	800–700 BC	87	0.663	0.603
Ban Non Wat	BA 5	700–420 BC	25	0.383	0.350
Nong Nor	BA	700–420 BC	42	0.562	0.510
Non Nok Tha	BA	1000–500 BC	37	0.526	0.478
Ban Non Wat	IA	420–100 BC	70	0.477	0.433
Noen U-Loke	IA 3	200–400 AD	13	0.612	0.557
Noen U-Loke	IA 4	300–500 AD	12	0.668	0.608
Non Ban Jak	IA	300–600 AD	44	0.526	0.477

The estimates in column (5) and (6) show, respectively, the GC computed before and after the adjustment procedure explained in the text.