| E | O (JD) | O (dat) | Period |
| -91 | 2414990 | 1899-12-01 | 309.5 |
| -86 | 2416550 | 1904-03-10 | 309.55 |
| -84 | 2417153 | 1905-11-03 | 309.49 |
| -83 | 2417464 | 1906-09-10 | 309.2 |
| -80 | 2418398 | 1909-04-01 | 309.14 |
| -79 | 2418707 | 1910-02-04 | 309.29 |
| -78 | 2419017 | 1910-12-11 | 308.82 |
| -77 | 2419324 | 1911-10-14 | 308.75 |
| -73 | 2420555 | 1915-02-26 | 308.41 |
| -72 | 2420867 | 1916-01-04 | 307.93 |
| -71 | 2421184 | 1916-11-16 | 307.73 |
| -67 | 2422405 | 1920-03-21 | 307.53 |
| -66 | 2422710 | 1921-01-20 | 307.5 |
| -65 | 2423020 | 1921-11-26 | 307.21 |
| -64 | 2423322 | 1922-09-24 | 306.79 |
| -61 | 2424247 | 1925-04-06 | 306.99 |
| -60 | 2424553 | 1926-02-06 | 307.41 |
| -59 | 2424866 | 1926-12-16 | 307.2 |
| -58 | 2425167 | 1927-10-13 | 307.34 |
| -54 | 2426390 | 1931-02-17 | 307.52 |
| -53 | 2426713 | 1932-01-06 | 307.32 |
| -52 | 2427017 | 1932-11-05 | 307.14 |
| -48 | 2428235 | 1936-03-07 | 307.06 |
| -47 | 2428554 | 1937-01-20 | 307.02 |
| -46 | 2428862 | 1937-11-24 | 306.91 |
| -45 | 2429160 | 1938-09-18 | 306.7 |
| -41 | 2430387 | 1942-01-27 | 306.71 |
| -40 | 2430698 | 1942-12-04 | 307.9 |
| -39 | 2431000 | 1943-10-02 | 308.01 |
| -35 | 2432232 | 1947-02-15 | 308.22 |
| -34 | 2432540 | 1947-12-20 | 308.76 |
| -33 | 2432840 | 1948-10-15 | 309.01 |
| -22 | 2436258 | 1958-02-23 | 309.08 |
| -21 | 2436555 | 1958-12-17 | 309.09 |
| -20 | 2436862 | 1959-10-20 | 309.09 |
| -16 | 2438116 | 1963-03-27 | 309.01 |
| -15 | 2438418 | 1964-01-23 | 308.9 |
| -14 | 2438722 | 1964-11-22 | 308.11 |
| -13 | 2439020 | 1965-09-16 | 308.19 |
| -10 | 2439950 | 1968-04-03 | 307.81 |
| -9 | 2440258 | 1969-02-05 | 307.35 |
| -8 | 2440566 | 1969-12-10 | 307.75 |
| -7 | 2440875 | 1970-10-15 | 308.01 |
| -5 | 2441490 | 1972-06-21 | 308.4 |
| -4 | 2441795 | 1973-04-22 | 309.04 |
| -3 | 2442108 | 1974-03-01 | 309.93 |
| -2 | 2442414 | 1975-01-01 | 310.68 |
| -1 | 2442721 | 1975-11-04 | 311.42 |
| 0 | 2443035 | 1976-09-13 | 312.64 |
| 1 | 2443362 | 1977-08-06 | 312.71 |
| 2 | 2443674 | 1978-06-14 | 313 |
| 3 | 2443982 | 1979-04-18 | 312.69 |
| 4 | 2444293 | 1980-02-23 | 312.85 |
| 5 | 2444613 | 1981-01-08 | 311.55 |
| 6 | 2444911 | 1981-11-02 | 310.88 |
| 7 | 2445234 | 1982-09-21 | 310.53 |
| 8 | 2445533 | 1983-07-17 | 309.66 |
| 9 | 2445861 | 1984-06-09 | 308.85 |
| 10 | 2446150 | 1985-03-25 | 308.36 |
| 11 | 2446473 | 1986-02-11 | 308.04 |
| 12 | 2446775 | 1986-12-10 | 307.77 |
| 13 | 2447072 | 1987-10-03 | 308.04 |
| 15 | 2447693 | 1989-06-15 | 308.09 |
| 16 | 2448005 | 1990-04-23 | 309.17 |
| 17 | 2448306 | 1991-02-18 | 309.38 |
| 18 | 2448625 | 1992-01-03 | 310.29 |
| 19 | 2448933 | 1992-11-06 | 310.9 |
| 20 | 2449247 | 1993-09-16 | 311.11 |
| 21 | 2449561 | 1994-07-27 | 311.13 |
| 22 | 2449870 | 1995-06-01 | 311.36 |
| 23 | 2450180 | 1996-04-06 | 310.52 |
| 24 | 2450488 | 1997-02-08 | 310.41 |
| 25 | 2450803 | 1997-12-20 | 310.18 |
| 26 | 2451111 | 1998-10-24 | 310.09 |
| 27 | 2451425 | 1999-09-03 | 309.99 |
| 28 | 2451724 | 2000-06-28 | 309.77 |
| 29 | 2452041 | 2001-05-11 | 309.55 |
| 30 | 2452352 | 2002-03-18 | 308.94 |
| 31 | 2452662 | 2003-01-22 | 308.87 |
| 32 | 2452968 | 2003-11-24 | 308.71 |
| 33 | 2453276 | 2004-09-27 | 309.32 |
| 34 | 2453585 | 2005-08-02 | 309.51 |
| 35 | 2453888 | 2006-06-01 | 309.09 |
| 36 | 2454202 | 2007-04-11 | 309.57 |
| 37 | 2454510 | 2008-02-13 | 309.77 |
| 38 | 2454830 | 2008-12-29 | 310.04 |
| 39 | 2455143 | 2009-11-07 | 310.17 |
| 40 | 2455433 | 2010-08-24 | 310.14 |
| 41 | 2455758 | 2011-07-15 | 309.48 |
| 42 | 2456061 | 2012-05-13 | 308.94 |
| 43 | 2456375 | 2013-03-23 | 308.28 |
| 44 | 2456684 | 2014-01-26 | 308.31 |
| 45 | 2456991 | 2014-11-29 | 308.45 |
| 46 | 2457295 | 2015-09-29 | 307.19 |
| 47 | 2457602 | 2016-08-01 | 307.06 |
| 48 | 2457910 | 2017-06-05 | 306.75 |
| 49 | 2458221 | 2018-04-12 | 306.65 |
| 50 | 2458526 | 2019-02-11 | 305.87 |
| 51 | 2458824 | 2019-12-06 | 305.34 |
| 52 | 2459137 | 2020-10-14 | 304.42 |
| 53 | 2459445 | 2021-08-18 | 303.93 |
| 54 | 2459750 | 2022-06-19 | 303.37 |
| 55 | 2460039 | 2023-04-04 | 303.08 |
| 56 | 2460347 | 2024-02-06 | 302.75 |
| 57 | 2460645 | 2024-11-30 | 301 |
| 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. |