Table 1. Mean characteristics of the experimental stands at the onset of the experiment and the length of the study periods. Stand groups: Sapling stand stage (SS; H0 < 8 m), energy wood thinning stage (EW; 8 m < H0 < 11 m), and pulpwood thinning stage (PW; H0 > 12 m). Exp #: Code of the stands in Luke’s data archive.
		1)	2)	2)	3)	4)	5)	6)	7)			8)
Stand code	Location	Temp. sum, dd	North coordinate	East coordinate	Site type	H50, m	Hdom, m	H0, m	D0, ha–1	Stems, ha–1	Volume, m3 ha–1	Age, yr	Study period, yr	Number of measurements	Replicates	Number of plots	Exp #
SS1	Oulu	1125	7216691	426800	MT2	17.2	3.9	3.0	1.6	30500	11	10–30	20	5	2–3	8	8550
SS2	Ylitornio	945	7360051	384943	MT2	14.3	6.0	5.0	5.1	20600	57	20–47	27	6	2	6	981
SS3	Kolari	829	7453094	358504	MT2	13.7	7.0	5.3	4.2	39200	66	22–50	28	c) 6+1	3	12	185
SS4	Kolari	829	7450500	358400	MT2	14.2	7.2	5.5	4.6	43000	78	23–45	22	5+1	3	12	286
SS5	Kolari	829	7451825	358394	MT2	14.2	7.7	5.7	4.7	34300	80	20–49	29	7	4	19	383
SS6	Rovaniemi	905	7355142	490371	MT2	14.1	6.7	5.9	5.9	a) 6700	45	22–53	31	7	3	14	881
SS7	Ylitornio	945	7360052	385064	MT2	13.2	8.3	6.4	5.6	29800	90	27–51	24	6	4	20	188
SS8	Rovaniemi	865	7353534	487942	MT2	15.4	8.4	6.9	7.3	10000	79	23–40	17	4	2	16	189
SS9	Kolari	793	7483287	372735	HrT	13.4	9.4	7.6	7.8	18100	112	29–54	25	6	2–3	9	183
EW10	Kolari	793	7483288	372737	HrT	13.9	10.4	8.1	7.7	17200	127	30–57	27	6	1–2	6	481
EW11	Oulu	1125	7216329	426907	HrT	16.8	10.7	8.8	6.8	7100	73	25–55	30	7	2	10	855
EW12	Liminka	1136	7192518	424218	MT2	14.7	11.2	8.9	8.6	4600	66	31–60	29	7	3	15	856
EW13	Kruunupyy	1161	7063962	309881	MT2	17.7	10.1	9.0	9.0	a) 2500	54	20–52	32	6+1	2	8	6
EW14	Pyhäjärvi	1060	7069128	434011	HrT	16.6	11.3	9.2	10.1	3800	85	34–65	31	7	2–3	9	854
EW15	Muurola	954	7359401	418050	HrT	13.1	12.0	9.8	8.3	6000	113	41–61	15	5	1	5	882
EW16	Kälviä	1099	7076704	346710	MT2	19.5	12.1	10.8	10.7	4700	123	19–40	21	3+1	4–7	28	86
PW17	Haapavesi	1089	7107747	411534	HrT	15.7	13.9	12.1	12.5	b) 2100	107	44–74	30	7	5–10	30	852
PW18	Kärsämäki	1091	7101751	447121	HrT	15.1	14.8	12.4	12.7	b) 1800	96	52–83	31	7	2–4	10	853
PW19	Utajärvi	1082	7185571	463722	MT2	15.2	16.5	13.8	12.7	4700	208	52–67	15	4	2	8	885
1) Cumulative annual temperature sum with +5 °C threshold value, calculations based on the period 1980–2010 2) ETRS-TM35FIN 3) Drained peatland forest site types: MT2 (Vaccinium myrtillus type II) and HrT (Herb-rich type) (Mtkg II and Rhtkg in Finnish nomenclature. see Laine et al. 2012) 4) Site index (dominant height at the age of 50 years) 5) Dominant height = mean height of 100 largest birch ha–1 6) Mean height, weighted by basal area 7) Mean DBH, weighted by basal area 8) Stand age at the onset of the experiment and at the end of the study period a) Stem number was low compared to other stands in the group b) Tending at sapling stand stage c) +1 means that one of the results has been interpolated due to the extraordinary long time between measurements (2 × 5 yrs).