The series of reconstructed 10-y averaged sunspot numbers.	
Years are given as -BC/AD. The tabulated years correspond to centers of the corresponding 10-year intervals.	
Negative values are artifacts and are consistent with zero within the error limits.
The actually observed group sunspot numbers (Hoyt D.V., and K. Schatten, Group Sunspot Numbers: 
A New Solar Activity Reconstruction, Solar Phys. 179, 189-219, 1998) are listed after 1615 AD.	

The full reference is :	
"Usoskin, I.G., S.K. Solanki, M. Korte, Solar activity reconstructed over the last 7000 years:	
 The influence of geomagnetic field changes, Geophys. Res. Lett., 33(8), L08103, 2006"	

Year	Sunspot number
+++++++++++++++++++++	
-4995	30.9
-4985	33.1
-4975	36.6
-4965	37.5
-4955	34.7
-4945	31.6
-4935	31
-4925	31.7
-4915	30.6
-4905	30.2
-4895	36.3
-4885	49.2
-4875	60.5
-4865	56.8
-4855	42.4
-4845	33.9
-4835	37.2
-4825	45.9
-4815	47.6
-4805	41.2
-4795	35.5
-4785	31
-4775	27.8
-4765	32.9
-4755	46.5
-4745	54.9
-4735	48.7
-4725	37.6
-4715	31.2
-4705	29.9
-4695	29.1
-4685	27.7
-4675	28.5
-4665	32.2
-4655	37.4
-4645	43.6
-4635	47.5
-4625	45.1
-4615	40.3
-4605	38.2
-4595	38.6
-4585	40.7
-4575	44.2
-4565	45
-4555	39.7
-4545	33.7
-4535	32.5
-4525	35.4
-4515	37.5
-4505	35.7
-4495	33.5
-4485	36.1
-4475	38.4
-4465	32
-4455	22.8
-4445	20.8
-4435	28.2
-4425	40.5
-4415	47.7
-4405	45.7
-4395	44.4
-4385	47.7
-4375	46.6
-4365	37.7
-4355	27.7
-4345	20
-4335	14.5
-4325	12.5
-4315	15.9
-4305	24.4
-4295	35.4
-4285	45.4
-4275	49
-4265	42.7
-4255	32.5
-4245	26.1
-4235	21.3
-4225	15.3
-4215	15.6
-4205	27.6
-4195	44.7
-4185	53.1
-4175	46.7
-4165	36.3
-4155	32.2
-4145	35.1
-4135	43.4
-4125	53.1
-4115	56.8
-4105	56.7
-4095	59.2
-4085	61.5
-4075	61.8
-4065	58.4
-4055	45.8
-4045	31.8
-4035	30.1
-4025	41.1
-4015	50.6
-4005	47.6
-3995	38.7
-3985	31
-3975	24.9
-3965	20.3
-3955	17.6
-3945	16.8
-3935	18.2
-3925	21.3
-3915	23.9
-3905	25.8
-3895	30.4
-3885	39.7
-3875	50.2
-3865	57.4
-3855	61.7
-3845	64.9
-3835	65.3
-3825	60.7
-3815	51.6
-3805	41.4
-3795	34.7
-3785	32.7
-3775	33
-3765	34.4
-3755	37.9
-3745	43.4
-3735	48.4
-3725	48.3
-3715	41.7
-3705	34.8
-3695	34.8
-3685	40
-3675	42.3
-3665	36.8
-3655	26.3
-3645	16
-3635	9.4
-3625	8.8
-3615	13.9
-3605	22.2
-3595	31
-3585	38.7
-3575	44.9
-3565	50.8
-3555	52.9
-3545	45.8
-3535	34.2
-3525	25.4
-3515	19.8
-3505	15.7
-3495	14
-3485	17.8
-3475	27.1
-3465	37.1
-3455	43
-3445	47.1
-3435	53.5
-3425	60.6
-3415	65.4
-3405	66.3
-3395	58.2
-3385	40.8
-3375	24.1
-3365	14.6
-3355	10.9
-3345	9.9
-3335	10.5
-3325	12.6
-3315	15.5
-3305	18.9
-3295	22.6
-3285	25.8
-3275	27.1
-3265	27.5
-3255	30.8
-3245	39.1
-3235	49.3
-3225	58.7
-3215	66.1
-3205	66
-3195	57.8
-3185	49.6
-3175	49.4
-3165	60
-3155	74
-3145	75.7
-3135	66.2
-3125	57.3
-3115	49.9
-3105	40.7
-3095	32.6
-3085	31.2
-3075	38.8
-3065	50.5
-3055	56.8
-3045	53.6
-3035	45.3
-3025	37.6
-3015	34.7
-3005	37.9
-2995	45.8
-2985	54.4
-2975	59.1
-2965	61
-2955	64.2
-2945	65.3
-2935	57.3
-2925	43.6
-2915	33
-2905	27.2
-2895	21.8
-2885	14.9
-2875	9.9
-2865	8.5
-2855	9.8
-2845	12
-2835	16.6
-2825	28.1
-2815	46.3
-2805	60.4
-2795	59.9
-2785	53.1
-2775	49.2
-2765	46.2
-2755	42.4
-2745	42.5
-2735	49.9
-2725	60.8
-2715	62.7
-2705	54.2
-2695	48.2
-2685	47.3
-2675	45.9
-2665	45.3
-2655	50.3
-2645	55.5
-2635	51.8
-2625	45.2
-2615	45.8
-2605	50.3
-2595	49.1
-2585	41.1
-2575	32.9
-2565	29.4
-2555	32.2
-2545	40.4
-2535	52.8
-2525	66.5
-2515	71.7
-2505	61.5
-2495	48.8
-2485	41.1
-2475	33.3
-2465	25.7
-2455	24.7
-2445	29.9
-2435	36.7
-2425	42.1
-2415	42.9
-2405	40.2
-2395	41.8
-2385	51.2
-2375	60.9
-2365	61.9
-2355	55.4
-2345	49.9
-2335	50.2
-2325	54
-2315	54.8
-2305	50.1
-2295	43.1
-2285	38.3
-2275	39.2
-2265	47.8
-2255	60.4
-2245	66.3
-2235	64.5
-2225	62.7
-2215	56.8
-2205	44.9
-2195	38.5
-2185	44
-2175	56.4
-2165	65.1
-2155	60
-2145	46
-2135	36.2
-2125	34.9
-2115	39.8
-2105	49.1
-2095	62.3
-2085	76
-2075	82.9
-2065	80.1
-2055	71.4
-2045	59.5
-2035	48.5
-2025	43.7
-2015	47.4
-2005	59.1
-1995	69.4
-1985	67.2
-1975	60.9
-1965	59.3
-1955	58.6
-1945	56.8
-1935	56.3
-1925	57.2
-1915	59
-1905	60.2
-1895	54.8
-1885	43.6
-1875	36.5
-1865	38.8
-1855	51.6
-1845	70.1
-1835	78.1
-1825	71.3
-1815	68.5
-1805	77.1
-1795	85.2
-1785	78.2
-1775	66.8
-1765	61.9
-1755	57
-1745	48
-1735	44.2
-1725	52.1
-1715	65
-1705	65.7
-1695	51.7
-1685	41
-1675	43
-1665	51.7
-1655	58.1
-1645	58.8
-1635	54.7
-1625	49.1
-1615	45
-1605	43.6
-1595	46.6
-1585	53.4
-1575	61.9
-1565	70.1
-1555	74.8
-1545	70.3
-1535	55.8
-1525	40.7
-1515	33.3
-1505	33.2
-1495	36.6
-1485	43.7
-1475	51.7
-1465	53.3
-1455	48.5
-1445	42.5
-1435	37.7
-1425	34.2
-1415	31
-1405	28
-1395	26
-1385	24.4
-1375	24.3
-1365	28.1
-1355	36.4
-1345	47.3
-1335	52.8
-1325	46.2
-1315	36.8
-1305	33.7
-1295	36
-1285	40.2
-1275	40.3
-1265	33.5
-1255	30.1
-1245	37
-1235	45.5
-1225	43.8
-1215	37.1
-1205	34.9
-1195	37.3
-1185	42.4
-1175	47.6
-1165	48.8
-1155	49.8
-1145	51.7
-1135	46.4
-1125	38.3
-1115	37.5
-1105	42.9
-1095	48.1
-1085	50.7
-1075	52.7
-1065	53.5
-1055	50.8
-1045	48
-1035	48.5
-1025	48.5
-1015	44
-1005	38.8
-995	37.4
-985	38
-975	39.3
-965	45
-955	52.5
-945	52.6
-935	46.4
-925	40.6
-915	36
-905	31.7
-895	31
-885	36.9
-875	45.4
-865	50.3
-855	49.8
-845	43.3
-835	33.5
-825	26.2
-815	20.8
-805	13.9
-795	8.4
-785	7.3
-775	7
-765	4.5
-755	3.3
-745	6.6
-735	12
-725	16.9
-715	21.6
-705	27.7
-695	36.7
-685	45
-675	44.4
-665	38.4
-655	38.4
-645	45.3
-635	52.5
-625	57.2
-615	59.9
-605	58.1
-595	54.6
-585	56
-575	60.8
-565	60.3
-555	53.4
-545	46.5
-535	43.5
-525	42.9
-515	43.1
-505	45.4
-495	48.4
-485	51.5
-475	57.7
-465	65.5
-455	69.8
-445	72.7
-435	75.1
-425	67.5
-415	48
-405	28.1
-395	16.9
-385	14.6
-375	15.6
-365	14.8
-355	12.4
-345	13.2
-335	19.7
-325	29.6
-315	38.4
-305	45.5
-295	53.9
-285	63.1
-275	66.2
-265	61.2
-255	56.1
-245	53.6
-235	51.2
-225	49.6
-215	45.4
-205	37.7
-195	34.2
-185	34.4
-175	32.1
-165	29.9
-155	32.3
-145	38.5
-135	44.7
-125	46.6
-115	44.6
-105	42.5
-95	42.4
-85	45.8
-75	50.4
-65	49
-55	41
-45	34.6
-35	35.1
-25	40.1
-15	43.9
-5	42.9
5	39.6
15	37
25	36.8
35	39.8
45	41.8
55	39.2
65	34.4
75	30.5
85	30.9
95	37.1
105	42.7
115	39
125	30
135	26.2
145	30.1
155	36.2
165	39.3
175	41.2
185	45.2
195	49
205	48
215	43.2
225	37.5
235	31
245	24.3
255	20.4
265	23.1
275	32.1
285	42.2
295	50.1
305	51.9
315	45.1
325	36.7
335	32.3
345	32.1
355	35.7
365	40.2
375	40.4
385	36.9
395	33.6
405	30.1
415	24.7
425	19.5
435	18.5
445	22.3
455	26.9
465	30.1
475	33.7
485	38.2
495	42.1
505	45.2
515	45.2
525	38.6
535	29.8
545	26.2
555	27.6
565	30.5
575	33.9
585	35.1
595	32.3
605	29.2
615	28.9
625	29.3
635	26.6
645	20.6
655	14.7
665	11.8
675	11.1
685	11.5
695	13.8
705	16.4
715	17.2
725	19.6
735	26.9
745	35
755	35
765	26.3
775	18.6
785	18.8
795	23.5
805	26.5
815	27.8
825	30.4
835	34.7
845	38.3
855	39.1
865	37.3
875	32.3
885	24.3
895	18.7
905	21.6
915	31.6
925	39.7
935	40.3
945	37.4
955	34.6
965	31.4
975	27
985	22.9
995	20.8
1005	18.9
1015	14.6
1025	9.7
1035	7.5
1045	8.7
1055	11.4
1065	14.8
1075	20.2
1085	27.6
1095	33
1105	32.7
1115	29.5
1125	30.8
1135	36.4
1145	35.4
1155	26.8
1165	22
1175	23.1
1185	24.7
1195	24.8
1205	22.8
1215	19.6
1225	19.2
1235	21.4
1245	22.3
1255	20.4
1265	16.5
1275	10.8
1285	4.4
1295	-0.1
1305	-1.3
1315	0
1325	2.4
1335	8.1
1345	17.2
1355	26.2
1365	30.7
1375	27.3
1385	18.1
1395	9.7
1405	5.1
1415	3.1
1425	0.8
1435	-2.1
1445	-3.5
1455	-1.9
1465	0.4
1475	1
1485	1.3
1495	2.9
1505	4.2
1515	3.7
1525	3.4
1535	6
1545	10.9
1555	15.7
1565	19.3
1575	22.7
1585	27.3
1595	31.6
1605	31.5
1615	26.1
1625	17.9
1635	16.9
1645	8.3
1655	0.8
1665	0.3
1675	0.4
1685	0.3
1695	0.0
1705	2.5
1715	8.9
1725	29.0
1735	23.4
1745	24.9
1755	29.6
1765	48.9
1775	51.6
1785	52.8
1795	25.4
1805	16.9
1815	13.7
1825	26.6
1835	53.6
1845	42.7
1855	40.6
1865	46.6
1875	37.7
1885	30.7
1895	43.4
1905	34.9
1915	43.6
1925	46.7
1935	57.7
1945	71.9
1955	85.5
1965	61.4
1975	71.4
1985	86.9
1995	73.3