| E | O (JD) | O (dat) | Period |
| -104 | 2413180 | 1894-12-17 | 308.09 |
| -102 | 2413792 | 1896-08-20 | 308.45 |
| -101 | 2414110 | 1897-07-04 | 308.54 |
| -97 | 2415363 | 1900-12-09 | 308.27 |
| -92 | 2416869 | 1905-01-23 | 308.05 |
| -91 | 2417189 | 1905-12-09 | 307.27 |
| -90 | 2417508 | 1906-10-24 | 306.21 |
| -89 | 2417813 | 1907-08-25 | 304.04 |
| -88 | 2418107 | 1908-06-14 | 300.6 |
| -87 | 2418413 | 1909-04-16 | 296.66 |
| -86 | 2418685 | 1910-01-13 | 293.38 |
| -85 | 2418989 | 1910-11-13 | 291.03 |
| -84 | 2419267 | 1911-08-18 | 290.05 |
| -83 | 2419573 | 1912-06-19 | 289.53 |
| -82 | 2419847 | 1913-03-20 | 289.85 |
| -81 | 2420137 | 1914-01-04 | 290.76 |
| -80 | 2420427 | 1914-10-21 | 290.85 |
| -79 | 2420722 | 1915-08-12 | 292.02 |
| -78 | 2421009 | 1916-05-25 | 293.07 |
| -77 | 2421314 | 1917-03-26 | 295.61 |
| -76 | 2421601 | 1918-01-07 | 296.92 |
| -75 | 2421894 | 1918-10-27 | 297.98 |
| -74 | 2422195 | 1919-08-24 | 299.05 |
| -73 | 2422500 | 1920-06-24 | 299.56 |
| -72 | 2422812 | 1921-05-02 | 299.24 |
| -71 | 2423104 | 1922-02-18 | 299.32 |
| -70 | 2423402 | 1922-12-13 | 299.29 |
| -69 | 2423707 | 1923-10-14 | 299.43 |
| -68 | 2423997 | 1924-07-30 | 299.86 |
| -67 | 2424289 | 1925-05-18 | 300.48 |
| -66 | 2424588 | 1926-03-13 | 302.05 |
| -65 | 2424896 | 1927-01-15 | 302.74 |
| -64 | 2425207 | 1927-11-22 | 303.94 |
| -63 | 2425515 | 1928-09-25 | 305.64 |
| -62 | 2425817 | 1929-07-24 | 306.41 |
| -61 | 2426127 | 1930-05-30 | 306.68 |
| -60 | 2426420 | 1931-03-19 | 306.36 |
| -59 | 2426737 | 1932-01-30 | 305.69 |
| -58 | 2427049 | 1932-12-07 | 304.97 |
| -57 | 2427349 | 1933-10-03 | 305.3 |
| -56 | 2427658 | 1934-08-08 | 304.39 |
| -55 | 2427960 | 1935-06-06 | 303.45 |
| -54 | 2428257 | 1936-03-29 | 301.85 |
| -53 | 2428555 | 1937-01-21 | 300.88 |
| -52 | 2428878 | 1937-12-10 | 300.93 |
| -51 | 2429161 | 1938-09-19 | 300.69 |
| -50 | 2429457 | 1939-07-12 | 300.64 |
| -49 | 2429757 | 1940-05-07 | 301.31 |
| -48 | 2430058 | 1941-03-04 | 300.73 |
| -47 | 2430370 | 1942-01-10 | 299.92 |
| -46 | 2430668 | 1942-11-04 | 300.93 |
| -45 | 2430965 | 1943-08-28 | 301.44 |
| -44 | 2431280 | 1944-07-08 | 301.65 |
| -43 | 2431560 | 1945-04-14 | 301.61 |
| -42 | 2431858 | 1946-02-06 | 301.91 |
| -41 | 2432171 | 1946-12-16 | 302.52 |
| -40 | 2432479 | 1947-10-20 | 303.06 |
| -39 | 2432781 | 1948-08-17 | 303.75 |
| -38 | 2433080 | 1949-06-12 | 304.55 |
| -37 | 2433391 | 1950-04-19 | 304.03 |
| -36 | 2433690 | 1951-02-12 | 303.5 |
| -35 | 2433995 | 1951-12-14 | 303.26 |
| -34 | 2434307 | 1952-10-21 | 304.34 |
| -33 | 2434600 | 1953-08-10 | 304.54 |
| -32 | 2434899 | 1954-06-05 | 303.85 |
| -31 | 2435209 | 1955-04-11 | 303.75 |
| -30 | 2435510 | 1956-02-06 | 303.18 |
| -29 | 2435837 | 1956-12-29 | 302.5 |
| -28 | 2436127 | 1957-10-15 | 301.1 |
| -27 | 2436418 | 1958-08-02 | 299.24 |
| -26 | 2436725 | 1959-06-05 | 297.25 |
| -25 | 2437023 | 1960-03-29 | 295.91 |
| -24 | 2437321 | 1961-01-21 | 294.75 |
| -23 | 2437596 | 1961-10-23 | 295.27 |
| -22 | 2437892 | 1962-08-15 | 295.55 |
| -21 | 2438189 | 1963-06-08 | 295.68 |
| -20 | 2438489 | 1964-04-03 | 295.95 |
| -19 | 2438788 | 1965-01-27 | 296.83 |
| -18 | 2439088 | 1965-11-23 | 298.19 |
| -17 | 2439385 | 1966-09-16 | 298.24 |
| -16 | 2439684 | 1967-07-12 | 298.76 |
| -15 | 2439972 | 1968-04-25 | 298.42 |
| -14 | 2440277 | 1969-02-24 | 298.9 |
| -13 | 2440581 | 1969-12-25 | 299.35 |
| -12 | 2440874 | 1970-10-14 | 299.22 |
| -11 | 2441185 | 1971-08-21 | 299.35 |
| -10 | 2441468 | 1972-05-30 | 299.85 |
| -9 | 2441782 | 1973-04-09 | 299.48 |
| -8 | 2442081 | 1974-02-02 | 299.28 |
| -7 | 2442367 | 1974-11-15 | 299.31 |
| -6 | 2442672 | 1975-09-16 | 298.96 |
| -5 | 2442979 | 1976-07-19 | 299.27 |
| -4 | 2443273 | 1977-05-09 | 298.76 |
| -3 | 2443571 | 1978-03-03 | 298.39 |
| -2 | 2443870 | 1978-12-27 | 298.32 |
| -1 | 2444168 | 1979-10-21 | 297.58 |
| 0 | 2444468 | 1980-08-16 | 296.85 |
| 1 | 2444767 | 1981-06-11 | 296.75 |
| 2 | 2445053 | 1982-03-24 | 296.12 |
| 3 | 2445355 | 1983-01-20 | 295.94 |
| 4 | 2445652 | 1983-11-13 | 295.71 |
| 5 | 2445943 | 1984-08-30 | 295.44 |
| 6 | 2446243 | 1985-06-26 | 295.5 |
| 7 | 2446531 | 1986-04-10 | 295.64 |
| 8 | 2446835 | 1987-02-08 | 295.46 |
| 9 | 2447128 | 1987-11-28 | 294.92 |
| 10 | 2447421 | 1988-09-16 | 294.65 |
| 11 | 2447719 | 1989-07-11 | 294.18 |
| 12 | 2448012 | 1990-04-30 | 294.08 |
| 13 | 2448311 | 1991-02-23 | 293.91 |
| 14 | 2448592 | 1991-12-01 | 294.38 |
| 15 | 2448889 | 1992-09-23 | 294.81 |
| 16 | 2449183 | 1993-07-14 | 295.12 |
| 17 | 2449479 | 1994-05-06 | 295.88 |
| 18 | 2449779 | 1995-03-02 | 295.84 |
| 19 | 2450078 | 1995-12-26 | 296.05 |
| 20 | 2450374 | 1996-10-17 | 296.05 |
| 21 | 2450669 | 1997-08-08 | 296.15 |
| 22 | 2450971 | 1998-06-06 | 296.45 |
| 23 | 2451252 | 1999-03-14 | 297.08 |
| 24 | 2451547 | 2000-01-03 | 298.34 |
| 25 | 2451852 | 2000-11-03 | 300.07 |
| 26 | 2452150 | 2001-08-28 | 301.62 |
| 27 | 2452454 | 2002-06-28 | 302.92 |
| 28 | 2452760 | 2003-04-30 | 303.56 |
| 29 | 2453070 | 2004-03-05 | 302.65 |
| 30 | 2453380 | 2005-01-09 | 301.95 |
| 31 | 2453681 | 2005-11-06 | 301.15 |
| 32 | 2453983 | 2006-09-04 | 300.31 |
| 33 | 2454269 | 2007-06-17 | 299.51 |
| 34 | 2454557 | 2008-03-31 | 299.4 |
| 35 | 2454869 | 2009-02-06 | 299.97 |
| 36 | 2455165 | 2009-11-29 | 300.94 |
| 37 | 2455469 | 2010-09-29 | 302.12 |
| 38 | 2455769 | 2011-07-26 | 303.95 |
| 39 | 2456080 | 2012-06-01 | 304.3 |
| 40 | 2456387 | 2013-04-04 | 303.58 |
| 41 | 2456687 | 2014-01-29 | 303.48 |
| 42 | 2456992 | 2014-11-30 | 303.23 |
| 43 | 2457306 | 2015-10-10 | 302.43 |
| 44 | 2457595 | 2016-07-25 | 301.66 |
| 45 | 2457891 | 2017-05-17 | 301.07 |
| 46 | 2458197 | 2018-03-19 | 301.06 |
| 47 | 2458504 | 2019-01-20 | 300.72 |
| 48 | 2458795 | 2019-11-07 | 300.45 |
| 49 | 2459101 | 2020-09-08 | 301.37 |
| 50 | 2459398 | 2021-07-02 | 301.57 |
| 51 | 2459706 | 2022-05-06 | 300.94 |
| 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. |