| E | O (JD) | O (dat) | Period |
| -122 | 2411298 | 1889-10-22 | 253.49 |
| -115 | 2413078 | 1894-09-06 | 253.49 |
| -113 | 2413584 | 1896-01-25 | 253.2 |
| -112 | 2413846 | 1896-10-13 | 253.13 |
| -111 | 2414088 | 1897-06-12 | 253 |
| -110 | 2414333 | 1898-02-12 | 252.81 |
| -108 | 2414850 | 1899-07-14 | 251.47 |
| -106 | 2415349 | 1900-11-25 | 250.96 |
| -105 | 2415605 | 1901-08-08 | 250.63 |
| -103 | 2416108 | 1902-12-24 | 250.92 |
| -102 | 2416356 | 1903-08-29 | 250.93 |
| -100 | 2416841 | 1904-12-26 | 250.83 |
| -99 | 2417097 | 1905-09-08 | 251.47 |
| -97 | 2417600 | 1907-01-24 | 251.81 |
| -96 | 2417860 | 1907-10-11 | 252.62 |
| -94 | 2418362 | 1909-02-24 | 253.11 |
| -93 | 2418620 | 1909-11-09 | 253.66 |
| -90 | 2419380 | 1911-12-09 | 253.51 |
| -89 | 2419630 | 1912-08-15 | 253.25 |
| -87 | 2420145 | 1914-01-12 | 253.08 |
| -86 | 2420390 | 1914-09-14 | 252.97 |
| -84 | 2420900 | 1916-02-06 | 251.66 |
| -83 | 2421150 | 1916-10-13 | 251.05 |
| -81 | 2421650 | 1918-02-25 | 251.15 |
| -80 | 2421910 | 1918-11-12 | 250.85 |
| -77 | 2422665 | 1920-12-06 | 251.11 |
| -76 | 2422879 | 1921-07-08 | 251.16 |
| -75 | 2423147 | 1922-04-02 | 251.46 |
| -74 | 2423417 | 1922-12-28 | 252.12 |
| -73 | 2423660 | 1923-08-28 | 252.52 |
| -72 | 2423917 | 1924-05-11 | 253.5 |
| -71 | 2424170 | 1925-01-19 | 253.98 |
| -70 | 2424420 | 1925-09-26 | 253.09 |
| -67 | 2425183 | 1927-10-29 | 252.38 |
| -66 | 2425434 | 1928-07-06 | 252.58 |
| -65 | 2425690 | 1929-03-19 | 252.82 |
| -64 | 2425937 | 1929-11-21 | 253.1 |
| -63 | 2426190 | 1930-08-01 | 252.97 |
| -62 | 2426435 | 1931-04-03 | 252.98 |
| -61 | 2426695 | 1931-12-19 | 253.12 |
| -60 | 2426960 | 1932-09-09 | 253.22 |
| -59 | 2427210 | 1933-05-17 | 253.89 |
| -58 | 2427452 | 1934-01-14 | 253.64 |
| -57 | 2427712 | 1934-10-01 | 253.52 |
| -56 | 2427963 | 1935-06-09 | 252.57 |
| -55 | 2428217 | 1936-02-18 | 251.62 |
| -54 | 2428479 | 1936-11-06 | 251.75 |
| -53 | 2428720 | 1937-07-05 | 251.86 |
| -52 | 2428976 | 1938-03-18 | 251.74 |
| -51 | 2429221 | 1938-11-18 | 251.61 |
| -50 | 2429466 | 1939-07-21 | 251.81 |
| -49 | 2429726 | 1940-04-06 | 252.19 |
| -48 | 2429979 | 1940-12-15 | 252.45 |
| -47 | 2430237 | 1941-08-30 | 251.75 |
| -46 | 2430482 | 1942-05-02 | 251.32 |
| -45 | 2430742 | 1943-01-17 | 250.74 |
| -44 | 2430997 | 1943-09-29 | 249.89 |
| -43 | 2431236 | 1944-05-25 | 249.26 |
| -42 | 2431477 | 1945-01-21 | 248.87 |
| -41 | 2431727 | 1945-09-28 | 249.05 |
| -40 | 2431980 | 1946-06-08 | 248.75 |
| -39 | 2432232 | 1947-02-15 | 249 |
| -38 | 2432478 | 1947-10-19 | 249.43 |
| -37 | 2432730 | 1948-06-27 | 249.39 |
| -36 | 2432983 | 1949-03-07 | 249.37 |
| -35 | 2433228 | 1949-11-07 | 249.48 |
| -34 | 2433477 | 1950-07-14 | 250.04 |
| -33 | 2433722 | 1951-03-16 | 250.63 |
| -32 | 2433970 | 1951-11-19 | 250.9 |
| -31 | 2434228 | 1952-08-03 | 251.29 |
| -30 | 2434481 | 1953-04-13 | 251.99 |
| -29 | 2434738 | 1953-12-26 | 252.55 |
| -28 | 2434988 | 1954-09-02 | 253.04 |
| -27 | 2435237 | 1955-05-09 | 253.15 |
| -26 | 2435489 | 1956-01-16 | 253.08 |
| -25 | 2435744 | 1956-09-27 | 253.44 |
| -24 | 2435999 | 1957-06-09 | 253.76 |
| -23 | 2436253 | 1958-02-18 | 254.5 |
| -22 | 2436506 | 1958-10-29 | 254.34 |
| -21 | 2436761 | 1959-07-11 | 254.18 |
| -20 | 2437019 | 1960-03-25 | 254.07 |
| -19 | 2437273 | 1960-12-04 | 253.9 |
| -18 | 2437532 | 1961-08-20 | 253.83 |
| -17 | 2437771 | 1962-04-16 | 254.21 |
| -16 | 2438029 | 1962-12-30 | 254.35 |
| -15 | 2438286 | 1963-09-13 | 253.93 |
| -14 | 2438538 | 1964-05-22 | 253.57 |
| -13 | 2438793 | 1965-02-01 | 253.74 |
| -12 | 2439057 | 1965-10-23 | 253.29 |
| -11 | 2439309 | 1966-07-02 | 252.37 |
| -10 | 2439551 | 1967-03-01 | 252 |
| -9 | 2439801 | 1967-11-06 | 251.79 |
| -8 | 2440064 | 1968-07-26 | 251.75 |
| -7 | 2440298 | 1969-03-17 | 252.25 |
| -6 | 2440554 | 1969-11-28 | 252.87 |
| -5 | 2440813 | 1970-08-14 | 253.35 |
| -4 | 2441065 | 1971-04-23 | 253.77 |
| -3 | 2441322 | 1972-01-05 | 253.75 |
| -2 | 2441585 | 1972-09-24 | 254.91 |
| -1 | 2441829 | 1973-05-26 | 255.18 |
| 0 | 2442078 | 1974-01-30 | 255.41 |
| 1 | 2442340 | 1974-10-19 | 255.4 |
| 2 | 2442588 | 1975-06-24 | 255.79 |
| 3 | 2442856 | 1976-03-18 | 256.35 |
| 4 | 2443114 | 1976-12-01 | 256.72 |
| 5 | 2443369 | 1977-08-13 | 257.15 |
| 6 | 2443616 | 1978-04-17 | 256.89 |
| 7 | 2443883 | 1979-01-09 | 256.62 |
| 8 | 2444142 | 1979-09-25 | 256.26 |
| 9 | 2444386 | 1980-05-26 | 256 |
| 10 | 2444655 | 1981-02-19 | 255.93 |
| 11 | 2444906 | 1981-10-28 | 255.62 |
| 12 | 2445157 | 1982-07-06 | 254.99 |
| 13 | 2445421 | 1983-03-27 | 254.67 |
| 14 | 2445668 | 1983-11-29 | 254.65 |
| 15 | 2445925 | 1984-08-12 | 254.24 |
| 16 | 2446176 | 1985-04-20 | 254.29 |
| 17 | 2446434 | 1986-01-03 | 254.37 |
| 18 | 2446684 | 1986-09-10 | 254.15 |
| 19 | 2446940 | 1987-05-24 | 253.85 |
| 20 | 2447198 | 1988-02-06 | 253.45 |
| 21 | 2447448 | 1988-10-13 | 253.08 |
| 22 | 2447706 | 1989-06-28 | 252.7 |
| 23 | 2447958 | 1990-03-07 | 252.61 |
| 24 | 2448200 | 1990-11-04 | 252.27 |
| 25 | 2448457 | 1991-07-19 | 251.87 |
| 26 | 2448707 | 1992-03-25 | 251.73 |
| 27 | 2448962 | 1992-12-05 | 251.24 |
| 28 | 2449216 | 1993-08-16 | 251.1 |
| 29 | 2449467 | 1994-04-24 | 251.01 |
| 30 | 2449715 | 1994-12-28 | 250.39 |
| 31 | 2449966 | 1995-09-05 | 249.91 |
| 32 | 2450212 | 1996-05-08 | 249.68 |
| 33 | 2450463 | 1997-01-14 | 249.47 |
| 34 | 2450713 | 1997-09-21 | 249.31 |
| 35 | 2450962 | 1998-05-28 | 249.05 |
| 36 | 2451209 | 1999-01-30 | 248.92 |
| 37 | 2451465 | 1999-10-13 | 248.98 |
| 38 | 2451711 | 2000-06-15 | 249.25 |
| 39 | 2451957 | 2001-02-16 | 249.7 |
| 40 | 2452202 | 2001-10-19 | 250.18 |
| 41 | 2452454 | 2002-06-28 | 250.17 |
| 42 | 2452705 | 2003-03-06 | 250 |
| 43 | 2452962 | 2003-11-18 | 250.55 |
| 44 | 2453215 | 2004-07-28 | 250.75 |
| 45 | 2453466 | 2005-04-05 | 250.73 |
| 46 | 2453707 | 2005-12-02 | 250.31 |
| 47 | 2453956 | 2006-08-08 | 250.3 |
| 48 | 2454214 | 2007-04-23 | 250.59 |
| 49 | 2454461 | 2007-12-26 | 251.13 |
| 50 | 2454711 | 2008-09-01 | 252.11 |
| 51 | 2454959 | 2009-05-07 | 252.87 |
| 52 | 2455217 | 2010-01-20 | 252.99 |
| 53 | 2455475 | 2010-10-05 | 252.64 |
| 54 | 2455726 | 2011-06-13 | 252.92 |
| 55 | 2455985 | 2012-02-27 | 252.86 |
| 56 | 2456233 | 2012-11-01 | 252.83 |
| 57 | 2456483 | 2013-07-09 | 252.05 |
| 58 | 2456729 | 2014-03-12 | 251.91 |
| 59 | 2456988 | 2014-11-26 | 252.1 |
| 60 | 2457239 | 2015-08-04 | 251.55 |
| 61 | 2457495 | 2016-04-16 | 251.28 |
| 62 | 2457738 | 2016-12-15 | 250.87 |
| 63 | 2457998 | 2017-09-01 | 250.65 |
| 64 | 2458252 | 2018-05-13 | 250.02 |
| 65 | 2458490 | 2019-01-06 | 249.68 |
| 66 | 2458738 | 2019-09-11 | 249.38 |
| 67 | 2458988 | 2020-05-18 | 249.38 |
| 68 | 2459243 | 2021-01-28 | 248.7 |
| 69 | 2459491 | 2021-10-03 | 248.86 |
| 70 | 2459739 | 2022-06-08 | 250.26 |
| E | Cycle number from the GCVS4 epoch. |
| O (JD) | Julian date at observed time for maximum. |
| O (Dat) | Same as above, expressed as date. |
| Period | Calculated mean period at cycle number E. |