| E | O (JD) | O (dat) | Period |
| -65 | 2411490 | 1890-05-02 | 442.16 |
| -61 | 2413245 | 1895-02-20 | 442.94 |
| -60 | 2413690 | 1896-05-10 | 442.46 |
| -57 | 2415030 | 1900-01-10 | 442.26 |
| -56 | 2415469 | 1901-03-25 | 442.38 |
| -55 | 2415901 | 1902-05-31 | 441.84 |
| -54 | 2416365 | 1903-09-07 | 441.7 |
| -53 | 2416785 | 1904-10-31 | 441.9 |
| -52 | 2417230 | 1906-01-19 | 441.29 |
| -51 | 2417680 | 1907-04-14 | 441.17 |
| -50 | 2418100 | 1908-06-07 | 442.74 |
| -48 | 2418990 | 1910-11-14 | 442.77 |
| -47 | 2419456 | 1912-02-23 | 443.65 |
| -46 | 2419880 | 1913-04-22 | 444.17 |
| -45 | 2420315 | 1914-07-01 | 446.48 |
| -44 | 2420800 | 1915-10-29 | 448.67 |
| -43 | 2421220 | 1916-12-22 | 450.09 |
| -42 | 2421660 | 1918-03-07 | 451.07 |
| -41 | 2422117 | 1919-06-07 | 452.66 |
| -39 | 2423045 | 1921-12-21 | 453.26 |
| -38 | 2423489 | 1923-03-10 | 453.31 |
| -37 | 2423948 | 1924-06-11 | 455 |
| -36 | 2424401 | 1925-09-07 | 454.52 |
| -35 | 2424851 | 1926-12-01 | 453.95 |
| -34 | 2425305 | 1928-02-28 | 452.95 |
| -33 | 2425763 | 1929-05-31 | 452.46 |
| -32 | 2426220 | 1930-08-31 | 451.16 |
| -31 | 2426654 | 1931-11-08 | 449.43 |
| -30 | 2427123 | 1933-02-19 | 447.95 |
| -29 | 2427569 | 1934-05-11 | 446.5 |
| -28 | 2428009 | 1935-07-25 | 443.29 |
| -27 | 2428451 | 1936-10-09 | 441.24 |
| -26 | 2428883 | 1937-12-15 | 439.48 |
| -25 | 2429332 | 1939-03-09 | 438.27 |
| -24 | 2429779 | 1940-05-29 | 438.83 |
| -23 | 2430181 | 1941-07-05 | 439.11 |
| -22 | 2430632 | 1942-09-29 | 439.22 |
| -21 | 2431064 | 1943-12-05 | 439.85 |
| -20 | 2431524 | 1945-03-09 | 439.84 |
| -19 | 2431974 | 1946-06-02 | 439.98 |
| -18 | 2432403 | 1947-08-05 | 440.79 |
| -17 | 2432838 | 1948-10-13 | 440.17 |
| -16 | 2433285 | 1950-01-03 | 440.19 |
| -15 | 2433719 | 1951-03-13 | 439.91 |
| -14 | 2434151 | 1952-05-18 | 441.18 |
| -13 | 2434593 | 1953-08-03 | 443 |
| -12 | 2435042 | 1954-10-26 | 444.35 |
| -11 | 2435487 | 1956-01-14 | 445.64 |
| -10 | 2435933 | 1957-04-04 | 447.48 |
| -9 | 2436389 | 1958-07-04 | 449.15 |
| -8 | 2436834 | 1959-09-22 | 450.25 |
| -7 | 2437281 | 1960-12-12 | 449.67 |
| -6 | 2437733 | 1962-03-09 | 449.84 |
| -5 | 2438188 | 1963-06-07 | 449.9 |
| -4 | 2438644 | 1964-09-05 | 449.45 |
| -3 | 2439098 | 1965-12-03 | 448.82 |
| -2 | 2439520 | 1967-01-29 | 447.81 |
| -1 | 2439983 | 1968-05-06 | 446.36 |
| 0 | 2440435 | 1969-08-01 | 444.65 |
| 1 | 2440878 | 1970-10-18 | 443.11 |
| 2 | 2441316 | 1971-12-30 | 442.78 |
| 3 | 2441759 | 1973-03-17 | 442.6 |
| 4 | 2442198 | 1974-05-30 | 441.49 |
| 5 | 2442633 | 1975-08-08 | 441.84 |
| 6 | 2443071 | 1976-10-19 | 442.71 |
| 7 | 2443527 | 1978-01-18 | 443.59 |
| 8 | 2443962 | 1979-03-29 | 444.21 |
| 9 | 2444408 | 1980-06-17 | 445.02 |
| 10 | 2444862 | 1981-09-14 | 445.25 |
| 11 | 2445307 | 1982-12-03 | 445.22 |
| 12 | 2445750 | 1984-02-19 | 445.36 |
| 13 | 2446193 | 1985-05-07 | 445.68 |
| 14 | 2446641 | 1986-07-29 | 445.32 |
| 15 | 2447078 | 1987-10-09 | 444.54 |
| 16 | 2447526 | 1988-12-30 | 444.73 |
| 17 | 2447983 | 1990-04-01 | 445.21 |
| 18 | 2448422 | 1991-06-14 | 445.36 |
| 19 | 2448864 | 1992-08-29 | 446.16 |
| 20 | 2449300 | 1993-11-08 | 446.85 |
| 21 | 2449755 | 1995-02-06 | 446.17 |
| 22 | 2450206 | 1996-05-02 | 446.15 |
| 23 | 2450647 | 1997-07-17 | 446.49 |
| 24 | 2451109 | 1998-10-22 | 446.55 |
| 25 | 2451552 | 2000-01-08 | 446.14 |
| 26 | 2451980 | 2001-03-11 | 445.05 |
| 27 | 2452437 | 2002-06-11 | 444.85 |
| 28 | 2452879 | 2003-08-27 | 445.14 |
| 29 | 2453325 | 2004-11-15 | 445.33 |
| 30 | 2453765 | 2006-01-29 | 446.35 |
| 31 | 2454207 | 2007-04-16 | 445.7 |
| 32 | 2454662 | 2008-07-14 | 444.58 |
| 33 | 2455113 | 2009-10-08 | 444.42 |
| 34 | 2455563 | 2011-01-01 | 443.04 |
| 35 | 2456010 | 2012-03-23 | 441.9 |
| 36 | 2456422 | 2013-05-09 | 440.35 |
| 37 | 2456872 | 2014-08-02 | 438.85 |
| 38 | 2457323 | 2015-10-27 | 437.88 |
| 39 | 2457743 | 2016-12-20 | 438.08 |
| 40 | 2458186 | 2018-03-08 | 439.06 |
| 41 | 2458621 | 2019-05-17 | 440.09 |
| 42 | 2459063 | 2020-08-01 | 439.63 |
| 43 | 2459500 | 2021-10-12 | 439.85 |
| 44 | 2459952 | 2023-01-07 | 441.89 |
| 45 | 2460397 | 2024-03-27 | 442.43 |
| 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. |