| E | O (JD) | O (dat) | Period |
| -76 | 2411134 | 1889-05-11 | 413.93 |
| -75 | 2411573 | 1890-07-24 | 412.6 |
| -74 | 2411989 | 1891-09-13 | 411.81 |
| -72 | 2412827 | 1893-12-29 | 410.77 |
| -71 | 2413232 | 1895-02-07 | 410.26 |
| -70 | 2413612 | 1896-02-22 | 409.91 |
| -69 | 2414034 | 1897-04-19 | 407.93 |
| -68 | 2414444 | 1898-06-03 | 406.16 |
| -67 | 2414844 | 1899-07-08 | 404.79 |
| -66 | 2415256 | 1900-08-24 | 404.87 |
| -65 | 2415665 | 1901-10-07 | 404.3 |
| -64 | 2416069 | 1902-11-15 | 402.94 |
| -63 | 2416455 | 1903-12-06 | 402.52 |
| -62 | 2416865 | 1905-01-19 | 402.38 |
| -61 | 2417270 | 1906-02-28 | 402.02 |
| -59 | 2418065 | 1908-05-03 | 403.41 |
| -58 | 2418472 | 1909-06-14 | 404.68 |
| -57 | 2418878 | 1910-07-25 | 405.72 |
| -56 | 2419281 | 1911-09-01 | 405.94 |
| -55 | 2419682 | 1912-10-06 | 406.57 |
| -52 | 2420920 | 1916-02-26 | 407.11 |
| -51 | 2421327 | 1917-04-08 | 407.03 |
| -50 | 2421730 | 1918-05-16 | 406.55 |
| -49 | 2422131 | 1919-06-21 | 406.17 |
| -48 | 2422543 | 1920-08-06 | 405.54 |
| -47 | 2422943 | 1921-09-10 | 404.5 |
| -46 | 2423351 | 1922-10-23 | 404.68 |
| -45 | 2423745 | 1923-11-21 | 404.88 |
| -44 | 2424154 | 1925-01-03 | 404.92 |
| -43 | 2424560 | 1926-02-13 | 404.64 |
| -42 | 2424971 | 1927-03-31 | 405.17 |
| -41 | 2425375 | 1928-05-08 | 405.22 |
| -40 | 2425778 | 1929-06-15 | 405.3 |
| -39 | 2426181 | 1930-07-23 | 404.66 |
| -38 | 2426583 | 1931-08-29 | 404.43 |
| -37 | 2426997 | 1932-10-16 | 404.52 |
| -36 | 2427397 | 1933-11-20 | 405.07 |
| -35 | 2427799 | 1934-12-27 | 405 |
| -34 | 2428200 | 1936-02-01 | 405.21 |
| -33 | 2428609 | 1937-03-16 | 405.16 |
| -32 | 2429020 | 1938-05-01 | 405.41 |
| -31 | 2429429 | 1939-06-14 | 405.8 |
| -30 | 2429822 | 1940-07-11 | 405.29 |
| -29 | 2430234 | 1941-08-27 | 404.62 |
| -28 | 2430636 | 1942-10-03 | 403.67 |
| -27 | 2431051 | 1943-11-22 | 402.79 |
| -26 | 2431451 | 1944-12-26 | 402.21 |
| -25 | 2431842 | 1946-01-21 | 401.68 |
| -24 | 2432245 | 1947-02-28 | 401.09 |
| -23 | 2432647 | 1948-04-05 | 400.91 |
| -22 | 2433047 | 1949-05-10 | 400.74 |
| -21 | 2433448 | 1950-06-15 | 401.65 |
| -20 | 2433844 | 1951-07-16 | 403 |
| -19 | 2434254 | 1952-08-29 | 404.42 |
| -18 | 2434655 | 1953-10-04 | 405.08 |
| -17 | 2435057 | 1954-11-10 | 406.18 |
| -16 | 2435467 | 1955-12-25 | 406.75 |
| -15 | 2435880 | 1957-02-10 | 407.76 |
| -14 | 2436298 | 1958-04-04 | 408.17 |
| -13 | 2436689 | 1959-04-30 | 408.51 |
| -12 | 2437105 | 1960-06-19 | 408.52 |
| -11 | 2437505 | 1961-07-24 | 408.05 |
| -10 | 2437925 | 1962-09-17 | 407.89 |
| -9 | 2438332 | 1963-10-29 | 407.66 |
| -8 | 2438736 | 1964-12-06 | 407.93 |
| -7 | 2439144 | 1966-01-18 | 407.14 |
| -6 | 2439549 | 1967-02-27 | 406.51 |
| -5 | 2439962 | 1968-04-15 | 405.54 |
| -4 | 2440364 | 1969-05-22 | 405.3 |
| -3 | 2440770 | 1970-07-02 | 404.57 |
| -2 | 2441172 | 1971-08-08 | 404.09 |
| -1 | 2441573 | 1972-09-12 | 403.75 |
| 0 | 2441979 | 1973-10-23 | 404.05 |
| 1 | 2442386 | 1974-12-04 | 404.76 |
| 2 | 2442779 | 1976-01-01 | 405.73 |
| 3 | 2443189 | 1977-02-14 | 405.82 |
| 4 | 2443593 | 1978-03-25 | 406.17 |
| 5 | 2444011 | 1979-05-17 | 405.91 |
| 6 | 2444417 | 1980-06-26 | 405.93 |
| 7 | 2444831 | 1981-08-14 | 405.88 |
| 8 | 2445218 | 1982-09-05 | 404.96 |
| 9 | 2445631 | 1983-10-23 | 404.04 |
| 10 | 2446028 | 1984-11-23 | 403.27 |
| 11 | 2446438 | 1986-01-07 | 403.57 |
| 12 | 2446840 | 1987-02-13 | 404.15 |
| 13 | 2447240 | 1988-03-19 | 405.72 |
| 14 | 2447640 | 1989-04-23 | 406.39 |
| 15 | 2448049 | 1990-06-06 | 407.81 |
| 16 | 2448462 | 1991-07-24 | 408.8 |
| 17 | 2448871 | 1992-09-05 | 410.09 |
| 18 | 2449287 | 1993-10-26 | 411.67 |
| 19 | 2449694 | 1994-12-07 | 412.75 |
| 20 | 2450110 | 1996-01-27 | 412.93 |
| 21 | 2450520 | 1997-03-12 | 412.84 |
| 22 | 2450933 | 1998-04-29 | 412.27 |
| 23 | 2451356 | 1999-06-26 | 411.4 |
| 24 | 2451768 | 2000-08-11 | 410.62 |
| 25 | 2452174 | 2001-09-21 | 409.43 |
| 26 | 2452584 | 2002-11-05 | 408.38 |
| 27 | 2452985 | 2003-12-11 | 407.06 |
| 28 | 2453392 | 2005-01-21 | 405.89 |
| 29 | 2453799 | 2006-03-04 | 405.61 |
| 30 | 2454204 | 2007-04-13 | 405.43 |
| 31 | 2454610 | 2008-05-23 | 405.02 |
| 32 | 2455012 | 2009-06-29 | 404.06 |
| 33 | 2455418 | 2010-08-09 | 402.15 |
| 34 | 2455827 | 2011-09-22 | 400.25 |
| 35 | 2456229 | 2012-10-28 | 399.25 |
| 36 | 2456629 | 2013-12-02 | 397.9 |
| 37 | 2457016 | 2014-12-24 | 396.65 |
| 38 | 2457400 | 2016-01-12 | 395.84 |
| 39 | 2457795 | 2017-02-10 | 395.95 |
| 40 | 2458207 | 2018-03-29 | 396.36 |
| 41 | 2458595 | 2019-04-21 | 397.11 |
| 42 | 2458988 | 2020-05-18 | 398.06 |
| 43 | 2459391 | 2021-06-25 | 398.88 |
| 44 | 2459800 | 2022-08-08 | 398.9 |
| 45 | 2460192 | 2023-09-04 | 398.39 |
| 46 | 2460590 | 2024-10-06 | 399.89 |
| 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. |