| E | O (JD) | O (dat) | Period |
| -79 | 2412130 | 1892-02-01 | 410.83 |
| -77 | 2412991 | 1894-06-11 | 410.55 |
| -76 | 2413387 | 1895-07-12 | 406.43 |
| -75 | 2413769 | 1896-07-28 | 407.45 |
| -74 | 2414199 | 1897-10-01 | 406.71 |
| -73 | 2414608 | 1898-11-14 | 403.38 |
| -72 | 2414990 | 1899-12-01 | 405.01 |
| -70 | 2415815 | 1902-03-06 | 405.63 |
| -69 | 2416220 | 1903-04-15 | 403.18 |
| -68 | 2416612 | 1904-05-11 | 402.81 |
| -67 | 2417024 | 1905-06-27 | 401.94 |
| -66 | 2417434 | 1906-08-11 | 400.86 |
| -65 | 2417824 | 1907-09-05 | 401.86 |
| -64 | 2418219 | 1908-10-04 | 403.36 |
| -63 | 2418615 | 1909-11-04 | 403.64 |
| -62 | 2419032 | 1910-12-26 | 402.86 |
| -61 | 2419426 | 1912-01-24 | 403.72 |
| -60 | 2419857 | 1913-03-30 | 405.64 |
| -59 | 2420252 | 1914-04-29 | 406.36 |
| -58 | 2420646 | 1915-05-28 | 406.22 |
| -57 | 2421049 | 1916-07-04 | 404.64 |
| -56 | 2421464 | 1917-08-23 | 404.57 |
| -55 | 2421872 | 1918-10-05 | 409.14 |
| -54 | 2422273 | 1919-11-10 | 411.14 |
| -53 | 2422675 | 1920-12-16 | 411.21 |
| -52 | 2423098 | 1922-02-12 | 410.93 |
| -51 | 2423528 | 1923-04-18 | 411.5 |
| -50 | 2423923 | 1924-05-17 | 412.71 |
| -49 | 2424347 | 1925-07-15 | 411.43 |
| -48 | 2424742 | 1926-08-14 | 408.14 |
| -47 | 2425164 | 1927-10-10 | 407.57 |
| -46 | 2425562 | 1928-11-11 | 407.07 |
| -45 | 2425971 | 1929-12-25 | 406.14 |
| -44 | 2426369 | 1931-01-27 | 405.57 |
| -43 | 2426788 | 1932-03-21 | 405.14 |
| -42 | 2427181 | 1933-04-18 | 405.72 |
| -41 | 2427594 | 1934-06-05 | 406.01 |
| -40 | 2427990 | 1935-07-06 | 406.36 |
| -39 | 2428408 | 1936-08-27 | 406.51 |
| -38 | 2428805 | 1937-09-28 | 405.72 |
| -37 | 2429219 | 1938-11-16 | 405.14 |
| -36 | 2429627 | 1939-12-29 | 404.57 |
| -35 | 2430033 | 1941-02-07 | 404.21 |
| -34 | 2430422 | 1942-03-03 | 404.5 |
| -33 | 2430834 | 1943-04-19 | 403.57 |
| -32 | 2431228 | 1944-05-17 | 403.57 |
| -31 | 2431644 | 1945-07-07 | 405.43 |
| -30 | 2432043 | 1946-08-10 | 405.71 |
| -29 | 2432453 | 1947-09-24 | 405.29 |
| -28 | 2432857 | 1948-11-01 | 407.08 |
| -27 | 2433274 | 1949-12-23 | 408 |
| -26 | 2433662 | 1951-01-15 | 406.86 |
| -25 | 2434074 | 1952-03-02 | 404.71 |
| -24 | 2434497 | 1953-04-29 | 403.5 |
| -23 | 2434902 | 1954-06-08 | 402.07 |
| -22 | 2435290 | 1955-07-01 | 401.07 |
| -21 | 2435686 | 1956-07-31 | 399.14 |
| -20 | 2436094 | 1957-09-12 | 396.78 |
| -19 | 2436471 | 1958-09-24 | 399.28 |
| -18 | 2436880 | 1959-11-07 | 402.43 |
| -17 | 2437279 | 1960-12-10 | 402.71 |
| -16 | 2437675 | 1962-01-10 | 404.36 |
| -15 | 2438107 | 1963-03-18 | 406 |
| -14 | 2438503 | 1964-04-17 | 407.28 |
| -13 | 2438915 | 1965-06-03 | 409.07 |
| -12 | 2439311 | 1966-07-04 | 407.65 |
| -11 | 2439724 | 1967-08-21 | 407.01 |
| -10 | 2440137 | 1968-10-07 | 407.64 |
| -9 | 2440544 | 1969-11-18 | 407.36 |
| -8 | 2440945 | 1970-12-24 | 407.65 |
| -7 | 2441363 | 1972-02-15 | 407.14 |
| -6 | 2441762 | 1973-03-20 | 407.86 |
| -5 | 2442167 | 1974-04-29 | 409.43 |
| -4 | 2442575 | 1975-06-11 | 408.86 |
| -3 | 2442986 | 1976-07-26 | 407.14 |
| -2 | 2443405 | 1977-09-18 | 407.07 |
| -1 | 2443816 | 1978-11-03 | 408.71 |
| 0 | 2444216 | 1979-12-08 | 408.57 |
| 1 | 2444609 | 1981-01-04 | 406.28 |
| 2 | 2445019 | 1982-02-18 | 405.36 |
| 3 | 2445445 | 1983-04-20 | 405.21 |
| 4 | 2445836 | 1984-05-15 | 405.14 |
| 5 | 2446243 | 1985-06-26 | 405.14 |
| 6 | 2446653 | 1986-08-10 | 403.64 |
| 7 | 2447052 | 1987-09-13 | 402.36 |
| 8 | 2447445 | 1988-10-10 | 402.79 |
| 9 | 2447855 | 1989-11-24 | 402.22 |
| 10 | 2448260 | 1991-01-03 | 402.21 |
| 11 | 2448654 | 1992-02-01 | 404.36 |
| 12 | 2449064 | 1993-03-17 | 405.36 |
| 13 | 2449463 | 1994-04-20 | 405.43 |
| 14 | 2449873 | 1995-06-04 | 406.43 |
| 15 | 2450285 | 1996-07-20 | 407.21 |
| 16 | 2450690 | 1997-08-29 | 408 |
| 17 | 2451101 | 1998-10-14 | 409.71 |
| 18 | 2451503 | 1999-11-20 | 409.93 |
| 19 | 2451916 | 2001-01-06 | 409.07 |
| 20 | 2452323 | 2002-02-17 | 408.36 |
| 21 | 2452749 | 2003-04-19 | 408.51 |
| 22 | 2453148 | 2004-05-22 | 408.08 |
| 23 | 2453554 | 2005-07-02 | 407.43 |
| 24 | 2453954 | 2006-08-06 | 406.78 |
| 25 | 2454369 | 2007-09-25 | 405.28 |
| 26 | 2454763 | 2008-10-23 | 403.78 |
| 27 | 2455180 | 2009-12-14 | 403.93 |
| 28 | 2455587 | 2011-01-25 | 405 |
| 29 | 2455984 | 2012-02-26 | 404.5 |
| 30 | 2456371 | 2013-03-19 | 402.14 |
| 31 | 2456792 | 2014-05-14 | 400.07 |
| 32 | 2457201 | 2015-06-27 | 400.36 |
| 33 | 2457594 | 2016-07-24 | 401.07 |
| 34 | 2457979 | 2017-08-13 | 400.64 |
| 35 | 2458389 | 2018-09-27 | 398.36 |
| 36 | 2458787 | 2019-10-30 | 396.53 |
| 37 | 2459183 | 2020-11-29 | 400.16 |
| 38 | 2459589 | 2022-01-09 | 403.2 |
| 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. |