| E | O (JD) | O (dat) | Period |
| -62 | 2411452 | 1890-03-25 | 452.85 |
| -58 | 2413231 | 1895-02-06 | 450.09 |
| -57 | 2413677 | 1896-04-27 | 447.1 |
| -56 | 2414102 | 1897-06-26 | 446.99 |
| -53 | 2415493 | 1901-04-18 | 447.26 |
| -52 | 2415914 | 1902-06-13 | 447.75 |
| -51 | 2416365 | 1903-09-07 | 449.28 |
| -49 | 2417260 | 1906-02-18 | 448.87 |
| -48 | 2417710 | 1907-05-14 | 448.28 |
| -47 | 2418153 | 1908-07-30 | 449.64 |
| -44 | 2419510 | 1912-04-17 | 450.14 |
| -43 | 2419960 | 1913-07-11 | 450.95 |
| -41 | 2420861 | 1915-12-29 | 451.71 |
| -40 | 2421310 | 1917-03-22 | 452.04 |
| -39 | 2421768 | 1918-06-23 | 451.39 |
| -38 | 2422221 | 1919-09-19 | 451.83 |
| -36 | 2423128 | 1922-03-14 | 452.07 |
| -35 | 2423576 | 1923-06-05 | 451 |
| -34 | 2424019 | 1924-08-21 | 449.87 |
| -33 | 2424483 | 1925-11-28 | 447.27 |
| -32 | 2424921 | 1927-02-09 | 445.65 |
| -31 | 2425373 | 1928-05-06 | 447.21 |
| -30 | 2425814 | 1929-07-21 | 445.35 |
| -29 | 2426244 | 1930-09-24 | 443.21 |
| -28 | 2426699 | 1931-12-23 | 443.22 |
| -27 | 2427157 | 1933-03-25 | 442.79 |
| -26 | 2427580 | 1934-05-22 | 444.43 |
| -25 | 2428029 | 1935-08-14 | 446.21 |
| -24 | 2428470 | 1936-10-28 | 445.21 |
| -23 | 2428916 | 1938-01-17 | 445 |
| -22 | 2429364 | 1939-04-10 | 445.89 |
| -21 | 2429826 | 1940-07-15 | 445.77 |
| -20 | 2430263 | 1941-09-25 | 444.78 |
| -17 | 2431594 | 1945-05-18 | 446.11 |
| -16 | 2432041 | 1946-08-08 | 448.45 |
| -15 | 2432482 | 1947-10-23 | 448.67 |
| -14 | 2432910 | 1948-12-24 | 450.87 |
| -13 | 2433400 | 1950-04-28 | 454.22 |
| -12 | 2433862 | 1951-08-03 | 456 |
| -11 | 2434303 | 1952-10-17 | 457.78 |
| -10 | 2434768 | 1954-01-25 | 454.78 |
| -9 | 2435226 | 1955-04-28 | 450.43 |
| -8 | 2435681 | 1956-07-26 | 450.93 |
| -7 | 2436120 | 1957-10-08 | 451.15 |
| -6 | 2436557 | 1958-12-19 | 448.64 |
| -5 | 2437011 | 1960-03-17 | 447.14 |
| -4 | 2437467 | 1961-06-16 | 448.71 |
| -3 | 2437920 | 1962-09-12 | 451 |
| -2 | 2438355 | 1963-11-21 | 450.79 |
| -1 | 2438812 | 1965-02-20 | 449 |
| 0 | 2439271 | 1966-05-25 | 449.14 |
| 1 | 2439720 | 1967-08-17 | 451.14 |
| 2 | 2440159 | 1968-10-29 | 450.93 |
| 3 | 2440605 | 1970-01-18 | 448.36 |
| 4 | 2441070 | 1971-04-28 | 448.21 |
| 5 | 2441521 | 1972-07-22 | 449.35 |
| 6 | 2441959 | 1973-10-03 | 450.64 |
| 7 | 2442401 | 1974-12-19 | 451 |
| 8 | 2442865 | 1976-03-27 | 449.65 |
| 9 | 2443305 | 1977-06-10 | 449.14 |
| 10 | 2443768 | 1978-09-16 | 448.14 |
| 11 | 2444221 | 1979-12-13 | 447.28 |
| 12 | 2444665 | 1981-03-01 | 448.58 |
| 13 | 2445103 | 1982-05-13 | 448.22 |
| 14 | 2445531 | 1983-07-15 | 444.85 |
| 15 | 2445997 | 1984-10-23 | 443.71 |
| 16 | 2446453 | 1986-01-22 | 445.5 |
| 17 | 2446895 | 1987-04-09 | 446.43 |
| 18 | 2447322 | 1988-06-09 | 444.58 |
| 19 | 2447776 | 1989-09-06 | 442 |
| 20 | 2448229 | 1990-12-03 | 441.28 |
| 21 | 2448655 | 1992-02-02 | 442.5 |
| 22 | 2449097 | 1993-04-19 | 442.86 |
| 23 | 2449541 | 1994-07-07 | 441.58 |
| 24 | 2449985 | 1995-09-24 | 442.35 |
| 25 | 2450427 | 1996-12-09 | 444.35 |
| 26 | 2450871 | 1998-02-26 | 444.43 |
| 27 | 2451316 | 1999-05-17 | 441.58 |
| 28 | 2451761 | 2000-08-04 | 442 |
| 29 | 2452212 | 2001-10-29 | 444.57 |
| 30 | 2452648 | 2003-01-08 | 444.71 |
| 31 | 2453060 | 2004-02-24 | 445.35 |
| 32 | 2453540 | 2005-06-18 | 445.08 |
| 33 | 2453982 | 2006-09-03 | 444.15 |
| 34 | 2454431 | 2007-11-26 | 446.93 |
| 35 | 2454881 | 2009-02-18 | 447.93 |
| 36 | 2455323 | 2010-05-06 | 446.43 |
| 37 | 2455755 | 2011-07-12 | 447.72 |
| 38 | 2456210 | 2012-10-09 | 448.43 |
| 39 | 2456661 | 2014-01-03 | 448.5 |
| 40 | 2457111 | 2015-03-29 | 450 |
| 41 | 2457570 | 2016-06-30 | 451.35 |
| 42 | 2458020 | 2017-09-23 | 451.72 |
| 43 | 2458463 | 2018-12-10 | 452.18 |
| 44 | 2458915 | 2020-03-06 | 450.88 |
| 45 | 2459369 | 2021-06-03 | 449.42 |
| 46 | 2459826 | 2022-09-03 | 449.31 |
| 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. |