Sunspot Cycle #	Smoothed Monthly	Date of Peak Number	Date Predicted by Z Value	Date SWPC – Z Date
Sunspot Cycle #	Number of Sunspots	From SWPC	Date Predicted by Z Value	Date SWPC – Z Date
1	141.3	1761.7	1761	0.7
2	190.1	1768.8	1768	0.8
3	252.9	1778.6	1779	−0.4
4	234.1	1788.3	1788.5	−0.2
5	75.1	1803.9	1803	0.9
6	77.1	1816.8	1816.9	−0.1
7	116.9	1829.7	1830.2	−0.5
8	244.9	1837.3	1836.3	1
9	213.9	1848.5	1848	0.5
10	185	1860	1859.6	0.4
11	234	1870.7	1871.3	−0.6
12	123.7	1883.8	1883.3	0.5
13	143.6	1893.8	1894.7	−0.9
14	104.6	1907.5	1907.5	0
15	175.7	1917.7	1918.6	−0.9
16	128.9	1928.3	1928	0.3
17	184.8	1937.7	1937	0.7
18	199.8	1948.7	1948.3	0.4
19	281.8	1958	1960	−2
20	156.6	1968.9	1967	1.9
21	199.6	1981	1978	3
22	203.8	1991.3	1990	1.3
23	180.3	2001.9	2001.9	0
24	114.1	2013.4	2014.5	−1.1
25	“115.0”	“2025.7”	2025.9
26			2037.2