Table 2. Use-Action Index, predicted use-action and last observed use-action.

Artefact	UAI	Pre	Obs	Artefact	UAI	Pre	Obs	Artefact	UAI	Pre	Obs
Amb01	–6.13	P	P	Inc06	–3.31	P	P	Ogr01	–3.37	P	A
Amb02	–15.35	P	P	Inc08	0.04	A	A	Orc01	–3.00	P	P
Amb03	–7.86	P	P	Inc09	2.73	A	A	Pat01	–26.71	P	P
Cer01	–9.90	P	P	Ivy01	–13.36	P	P	Ram02	–9.81	P	P
Che01	0.95	A	A	Jad01	1.44	A	A	RamUn	–10.33	P	P
Chr01	0.25	A	P	Kiy02	3.37	A	A	RF001	–16.05	P	P
Del01	–5.27	P	P	Lrl01	–31.10	P	P	RF002	–17.42	P	P
Del02	2.56	A	A	Luc01	–2.59	P	P	Sat01	–4.02	P	P
Dnt01	1.87	A	A	Luc02	0.63	A	P	Sat02	–5.04	P	P
Drg01	–35.31	P	P	Luc03	–1.13	P	P	Scr01	–8.62	P	P
Drs01	–5.26	P	P	Luc04	–6.69	P	P	Scr02	2.90	A	A
Els01	–8.82	P	P	Luc05	–4.89	P	P	Sid01	1.02	A	P
Ezr01	–6.08	P	P	Luc06	–9.13	P	P	Skp01	–15.60	P	P
Gol01	1.39	A	A	Luc07	–10.36	P	P	Sln01	–37.35	P	P
Gol02	3.09	A	A	Luc08	–1.96	P	P	Sln02	–22.15	P	P
Gol03	–1.18	P	P	Med01	5.49	A	A	Smt01	1.80	A	A
Gol04	5.49	A	A	Mrl01	5.54	A	A	Tik01	2.54	A	A
Hly01	–0.55	P	A	Nef/Hly01	–3.09	P	P	Zar01	–13.93	P	P
Icb01	–8.75	P	P	Nef02	2.55	A	A	Zar02	–0.78	P	P
Inc02	–1.73	P	P	Nik02	–9.50	P	P	Zar03	–1.35	P	P

UAI: Use-Action Index, see text for details. Pre: use-action predicted by UAI (A = axe hammer, P = pound hammer). Obs: observed use-action prior to tool collection.