| E | O (JD) | O (dat) | Period |
| -92 | 2415316 | 1900-10-23 | 328.73 |
| -91 | 2415655 | 1901-09-27 | 328.14 |
| -89 | 2416300 | 1903-07-04 | 327.51 |
| -88 | 2416642 | 1904-06-10 | 328.28 |
| -87 | 2416978 | 1905-05-12 | 328.31 |
| -86 | 2417281 | 1906-03-11 | 328.55 |
| -85 | 2417615 | 1907-02-08 | 328.07 |
| -84 | 2417938 | 1907-12-28 | 328.41 |
| -83 | 2418285 | 1908-12-09 | 327.52 |
| -82 | 2418605 | 1909-10-25 | 327.31 |
| -81 | 2418939 | 1910-09-24 | 327.65 |
| -80 | 2419258 | 1911-08-09 | 327.35 |
| -79 | 2419592 | 1912-07-08 | 327.57 |
| -78 | 2419907 | 1913-05-19 | 326.88 |
| -77 | 2420233 | 1914-04-10 | 326.7 |
| -76 | 2420560 | 1915-03-03 | 326.65 |
| -75 | 2420899 | 1916-02-05 | 327.03 |
| -74 | 2421233 | 1917-01-04 | 327.04 |
| -73 | 2421549 | 1917-11-16 | 327.46 |
| -72 | 2421866 | 1918-09-29 | 327.33 |
| -71 | 2422201 | 1919-08-30 | 326.88 |
| -70 | 2422529 | 1920-07-23 | 326.66 |
| -69 | 2422856 | 1921-06-15 | 327.32 |
| -68 | 2423184 | 1922-05-09 | 327.53 |
| -67 | 2423512 | 1923-04-02 | 327.53 |
| -66 | 2423835 | 1924-02-19 | 327.09 |
| -65 | 2424168 | 1925-01-17 | 326.77 |
| -64 | 2424502 | 1925-12-17 | 326.26 |
| -63 | 2424812 | 1926-10-23 | 325.8 |
| -62 | 2425144 | 1927-09-20 | 325.45 |
| -61 | 2425473 | 1928-08-14 | 324.85 |
| -60 | 2425795 | 1929-07-02 | 324.53 |
| -59 | 2426116 | 1930-05-19 | 324.51 |
| -58 | 2426442 | 1931-04-10 | 324.8 |
| -57 | 2426768 | 1932-03-01 | 324.44 |
| -56 | 2427086 | 1933-01-13 | 324.38 |
| -55 | 2427419 | 1933-12-12 | 324.23 |
| -54 | 2427743 | 1934-11-01 | 324.38 |
| -53 | 2428064 | 1935-09-18 | 324.2 |
| -52 | 2428390 | 1936-08-09 | 324.09 |
| -51 | 2428714 | 1937-06-29 | 324.21 |
| -50 | 2429031 | 1938-05-12 | 324.52 |
| -49 | 2429363 | 1939-04-09 | 325.22 |
| -48 | 2429684 | 1940-02-24 | 326.02 |
| -47 | 2430008 | 1941-01-13 | 326.57 |
| -46 | 2430335 | 1941-12-06 | 326.97 |
| -45 | 2430671 | 1942-11-07 | 326.45 |
| -44 | 2430997 | 1943-09-29 | 325.78 |
| -43 | 2431326 | 1944-08-23 | 325.84 |
| -42 | 2431652 | 1945-07-15 | 325.23 |
| -41 | 2431975 | 1946-06-03 | 324.93 |
| -40 | 2432283 | 1947-04-07 | 324.33 |
| -39 | 2432613 | 1948-03-02 | 323.72 |
| -38 | 2432947 | 1949-01-30 | 323.49 |
| -37 | 2433264 | 1949-12-13 | 323.55 |
| -36 | 2433598 | 1950-11-12 | 324.11 |
| -35 | 2433917 | 1951-09-27 | 324.4 |
| -34 | 2434230 | 1952-08-05 | 324.42 |
| -33 | 2434559 | 1953-06-30 | 324.79 |
| -32 | 2434883 | 1954-05-20 | 325.15 |
| -31 | 2435214 | 1955-04-16 | 325.29 |
| -30 | 2435533 | 1956-02-29 | 326.16 |
| -29 | 2435869 | 1957-01-30 | 326.71 |
| -28 | 2436198 | 1957-12-25 | 326.59 |
| -27 | 2436514 | 1958-11-06 | 326.52 |
| -26 | 2436842 | 1959-09-30 | 326.8 |
| -25 | 2437173 | 1960-08-26 | 327.38 |
| -24 | 2437498 | 1961-07-17 | 327.71 |
| -23 | 2437824 | 1962-06-08 | 328.41 |
| -22 | 2438149 | 1963-04-29 | 329.08 |
| -21 | 2438486 | 1964-03-31 | 329.5 |
| -20 | 2438816 | 1965-02-24 | 329.59 |
| -19 | 2439148 | 1966-01-22 | 329.78 |
| -18 | 2439476 | 1966-12-16 | 329.72 |
| -17 | 2439802 | 1967-11-07 | 329.47 |
| -16 | 2440138 | 1968-10-08 | 328.65 |
| -15 | 2440462 | 1969-08-28 | 328.1 |
| -14 | 2440791 | 1970-07-23 | 326.87 |
| -13 | 2441119 | 1971-06-16 | 326.02 |
| -12 | 2441448 | 1972-05-10 | 324.85 |
| -11 | 2441770 | 1973-03-28 | 323.69 |
| -10 | 2442096 | 1974-02-17 | 322.91 |
| -9 | 2442407 | 1974-12-25 | 322 |
| -8 | 2442735 | 1975-11-18 | 321.59 |
| -7 | 2443052 | 1976-09-30 | 321.33 |
| -6 | 2443376 | 1977-08-20 | 321.15 |
| -5 | 2443696 | 1978-07-06 | 321.63 |
| -4 | 2444016 | 1979-05-22 | 322.22 |
| -3 | 2444343 | 1980-04-13 | 322.62 |
| -2 | 2444663 | 1981-02-27 | 323.26 |
| -1 | 2444979 | 1982-01-09 | 323.83 |
| 0 | 2445313 | 1982-12-09 | 324.68 |
| 1 | 2445633 | 1983-10-25 | 325.24 |
| 2 | 2445963 | 1984-09-19 | 325.6 |
| 3 | 2446286 | 1985-08-08 | 326.42 |
| 4 | 2446614 | 1986-07-02 | 326.75 |
| 5 | 2446944 | 1987-05-28 | 326.74 |
| 6 | 2447267 | 1988-04-15 | 326.85 |
| 7 | 2447593 | 1989-03-07 | 326.73 |
| 8 | 2447926 | 1990-02-03 | 327.15 |
| 9 | 2448248 | 1990-12-22 | 327.09 |
| 10 | 2448578 | 1991-11-17 | 326.85 |
| 11 | 2448900 | 1992-10-04 | 326.89 |
| 12 | 2449228 | 1993-08-28 | 326.85 |
| 13 | 2449563 | 1994-07-29 | 326.66 |
| 14 | 2449885 | 1995-06-16 | 326.8 |
| 15 | 2450207 | 1996-05-03 | 326.76 |
| 16 | 2450536 | 1997-03-28 | 326.89 |
| 17 | 2450865 | 1998-02-20 | 326.77 |
| 18 | 2451190 | 1999-01-11 | 326.55 |
| 19 | 2451517 | 1999-12-04 | 326.84 |
| 20 | 2451845 | 2000-10-27 | 326.88 |
| 21 | 2452172 | 2001-09-19 | 326.75 |
| 22 | 2452499 | 2002-08-12 | 326.89 |
| 23 | 2452823 | 2003-07-02 | 327.35 |
| 24 | 2453151 | 2004-05-25 | 327.73 |
| 25 | 2453477 | 2005-04-16 | 327.88 |
| 26 | 2453805 | 2006-03-10 | 328.35 |
| 27 | 2454136 | 2007-02-04 | 328.78 |
| 28 | 2454468 | 2008-01-02 | 329.13 |
| 29 | 2454797 | 2008-11-26 | 329.12 |
| 30 | 2455121 | 2009-10-16 | 329.09 |
| 31 | 2455455 | 2010-09-15 | 328.2 |
| 32 | 2455784 | 2011-08-10 | 327.4 |
| 33 | 2456112 | 2012-07-03 | 326.57 |
| 34 | 2456438 | 2013-05-25 | 325.35 |
| 35 | 2456767 | 2014-04-19 | 324.28 |
| 36 | 2457080 | 2015-02-26 | 323.02 |
| 37 | 2457409 | 2016-01-21 | 321.99 |
| 38 | 2457732 | 2016-12-09 | 321.07 |
| 39 | 2458044 | 2017-10-17 | 320.9 |
| 40 | 2458368 | 2018-09-06 | 320.61 |
| 41 | 2458689 | 2019-07-24 | 320.78 |
| 42 | 2459007 | 2020-06-06 | 320.29 |
| 43 | 2459325 | 2021-04-20 | 320.46 |
| 44 | 2459656 | 2022-03-17 | 321.4 |
| 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. |