Table 4. Key features of the trials from which the data for genetically improved trees were obtained.
Trial name	Tree species	Entry type	Spacing (m)	No. of genetic entries	No. of repl.	Established	Age at measurement (years)	Range in entry specific mean height (m) 1	PGE 2	Site index (m)	Latitude (degrees)	Longitude (degrees)	Altitude (m)
975A	Spruce	Clones	1.4×1.4	309	9	1984	8, 13	1.26–3.35, 1.92–7.40	–0.22–0.56	31	56.96	12.73	60
976A	Spruce	Clones	1.4×1.4	309	9	1984	8, 13	0.85–2.21, 1.25–4.10	–0.11–0.50	30	57.54	15.60	225
779A	Spruce	Full-sib	2.0×2.0	115	4	1977	9, 14	1.36–2.14, 2.60–6.10	0.01–0.23	33	56.66	13.09	90
971A	Spruce	Clones	1.4×1.4	258	9	1984	8, 13	0.89–2.61, 1.85–5.12	–0.15–0.46	30	57.54	15.60	225
974A	Spruce	Clones	1.4×1.4	255	9	1984	8, 13	0.46–4.20, 0.80–7.85	–0.11–0.56	34	56.03	13.08	110
924A	Pine	Half-sib	1.4×1.4	92	12	1982	7, 12	1.57–2.22, 3.55–4.88	–0.06–0.10	27	55.61	14.12	115
201A	Pine	Half-sib	2.0×2.0	83	15	1989	10, 15	2.15–4.45, 4.75–7.70	–0.04–0.10	26	60.42	16.71	100
201C	Pine	Half-sib	2.0×2.0	84	19	1989	10, 15	0.90–1.65, 2.09–3.54	–0.09–0.13	20	61.47	13.08	405
205A	Pine	Half-sib	2.0×2.0	96	20	1990	10, 15	2.18–4.17, 5.07–7.81	–0.15–0.18	27	58.47	13.50	115
205E	Pine	Half-sib	2.0×2.0	83	19	1991	10, 15	2.10–4.04, 5.20–8.18	–0.04–0.13	27	59.62	12.97	80
851A	Pine	Half-sib	2.0×2.0	135	19	1985	15, 20	2.00–3.83, 3.95–6.50	–0.04–0.10	22	60.77	12.71	360
1 For each trial, the first row shows range in mean height for the first measurement and the second row shows the mean height range during the second measurement 2 PGE = Predicted genetic effect