| E | O (JD) | O (dat) | Period |
| -76 | 2415346 | 1900-11-22 | 353.43 |
| -75 | 2415700 | 1901-11-11 | 354.21 |
| -74 | 2416050 | 1902-10-27 | 354.19 |
| -73 | 2416395 | 1903-10-07 | 354.5 |
| -72 | 2416760 | 1904-10-06 | 353.87 |
| -71 | 2417115 | 1905-09-26 | 353.66 |
| -70 | 2417472 | 1906-09-18 | 354.31 |
| -69 | 2417822 | 1907-09-03 | 354.05 |
| -68 | 2418181 | 1908-08-27 | 352.22 |
| -67 | 2418521 | 1909-08-02 | 351.1 |
| -66 | 2418878 | 1910-07-25 | 350.07 |
| -65 | 2419247 | 1911-07-29 | 349.32 |
| -62 | 2420293 | 1914-06-09 | 348.12 |
| -61 | 2420611 | 1915-04-23 | 346.94 |
| -60 | 2420976 | 1916-04-22 | 346.27 |
| -59 | 2421314 | 1917-03-26 | 345.22 |
| -58 | 2421665 | 1918-03-12 | 344.05 |
| -57 | 2421993 | 1919-02-03 | 343.75 |
| -56 | 2422339 | 1920-01-15 | 344.04 |
| -55 | 2422690 | 1920-12-31 | 342.89 |
| -54 | 2423039 | 1921-12-15 | 343.05 |
| -53 | 2423378 | 1922-11-19 | 343 |
| -52 | 2423719 | 1923-10-26 | 343.27 |
| -51 | 2424058 | 1924-09-29 | 342.79 |
| -50 | 2424398 | 1925-09-04 | 342.22 |
| -49 | 2424746 | 1926-08-18 | 342.39 |
| -48 | 2425090 | 1927-07-28 | 343.3 |
| -47 | 2425431 | 1928-07-03 | 343.87 |
| -46 | 2425774 | 1929-06-11 | 344.84 |
| -45 | 2426113 | 1930-05-16 | 345.82 |
| -44 | 2426463 | 1931-05-01 | 346.85 |
| -43 | 2426815 | 1932-04-17 | 348.36 |
| -42 | 2427156 | 1933-03-24 | 349.57 |
| -41 | 2427511 | 1934-03-14 | 351.15 |
| -40 | 2427863 | 1935-03-01 | 352.23 |
| -39 | 2428217 | 1936-02-18 | 352.66 |
| -38 | 2428574 | 1937-02-09 | 353.68 |
| -37 | 2428920 | 1938-01-21 | 354.19 |
| -36 | 2429285 | 1939-01-21 | 354.71 |
| -35 | 2429633 | 1940-01-04 | 355.58 |
| -34 | 2429984 | 1940-12-20 | 355.98 |
| -33 | 2430351 | 1941-12-22 | 356.72 |
| -32 | 2430695 | 1942-12-01 | 357.13 |
| -31 | 2431062 | 1943-12-03 | 357.41 |
| -30 | 2431425 | 1944-11-30 | 357.79 |
| -29 | 2431775 | 1945-11-15 | 357.93 |
| -28 | 2432140 | 1946-11-15 | 357.5 |
| -27 | 2432489 | 1947-10-30 | 357.36 |
| -26 | 2432854 | 1948-10-29 | 356.98 |
| -25 | 2433205 | 1949-10-15 | 356.14 |
| -24 | 2433566 | 1950-10-11 | 355.78 |
| -23 | 2433919 | 1951-09-29 | 354.94 |
| -22 | 2434272 | 1952-09-16 | 354.55 |
| -21 | 2434638 | 1953-09-17 | 353.11 |
| -20 | 2434976 | 1954-08-21 | 351.33 |
| -19 | 2435334 | 1955-08-14 | 349.74 |
| -18 | 2435685 | 1956-07-30 | 348.72 |
| -17 | 2436039 | 1957-07-19 | 347.43 |
| -16 | 2436377 | 1958-06-22 | 345.8 |
| -15 | 2436709 | 1959-05-20 | 345.65 |
| -14 | 2437063 | 1960-05-08 | 344.95 |
| -13 | 2437414 | 1961-04-24 | 344.78 |
| -12 | 2437754 | 1962-03-30 | 345.19 |
| -11 | 2438090 | 1963-03-01 | 345.47 |
| -10 | 2438447 | 1964-02-21 | 345.4 |
| -9 | 2438791 | 1965-01-30 | 344.51 |
| -8 | 2439136 | 1966-01-10 | 343.92 |
| -7 | 2439488 | 1966-12-28 | 343.72 |
| -6 | 2439821 | 1967-11-26 | 343.05 |
| -5 | 2440164 | 1968-11-03 | 341.92 |
| -4 | 2440505 | 1969-10-10 | 341.59 |
| -3 | 2440846 | 1970-09-16 | 341.43 |
| -2 | 2441190 | 1971-08-26 | 341.21 |
| -1 | 2441527 | 1972-07-28 | 342.02 |
| 0 | 2441868 | 1973-07-04 | 343.18 |
| 1 | 2442213 | 1974-06-14 | 344.14 |
| 2 | 2442557 | 1975-05-24 | 344.79 |
| 3 | 2442895 | 1976-04-26 | 345.92 |
| 4 | 2443247 | 1977-04-13 | 347.53 |
| 5 | 2443607 | 1978-04-08 | 349.11 |
| 6 | 2443948 | 1979-03-15 | 350.19 |
| 7 | 2444289 | 1980-02-19 | 351.85 |
| 8 | 2444647 | 1981-02-11 | 353.18 |
| 9 | 2445005 | 1982-02-04 | 353.79 |
| 10 | 2445363 | 1983-01-28 | 354.57 |
| 11 | 2445710 | 1984-01-10 | 355.81 |
| 12 | 2446077 | 1985-01-11 | 356.58 |
| 13 | 2446430 | 1985-12-30 | 356.95 |
| 14 | 2446783 | 1986-12-18 | 357.51 |
| 15 | 2447142 | 1987-12-12 | 358.04 |
| 16 | 2447499 | 1988-12-03 | 358.68 |
| 17 | 2447858 | 1989-11-27 | 358.37 |
| 18 | 2448222 | 1990-11-26 | 358.72 |
| 19 | 2448583 | 1991-11-22 | 358.64 |
| 20 | 2448940 | 1992-11-13 | 358.75 |
| 21 | 2449300 | 1993-11-08 | 358.85 |
| 22 | 2449650 | 1994-10-24 | 358.69 |
| 23 | 2450012 | 1995-10-21 | 358.29 |
| 24 | 2450366 | 1996-10-09 | 358.38 |
| 25 | 2450734 | 1997-10-12 | 358.63 |
| 26 | 2451093 | 1998-10-06 | 358.65 |
| 27 | 2451449 | 1999-09-27 | 358.44 |
| 28 | 2451803 | 2000-09-15 | 357.85 |
| 29 | 2452166 | 2001-09-13 | 357.35 |
| 30 | 2452525 | 2002-09-07 | 356.4 |
| 31 | 2452880 | 2003-08-28 | 355.53 |
| 32 | 2453231 | 2004-08-13 | 354.98 |
| 33 | 2453589 | 2005-08-06 | 354.15 |
| 34 | 2453944 | 2006-07-27 | 352.65 |
| 35 | 2454296 | 2007-07-14 | 351.66 |
| 36 | 2454642 | 2008-06-24 | 350.81 |
| 37 | 2455000 | 2009-06-17 | 349.79 |
| 38 | 2455348 | 2010-05-31 | 348.68 |
| 39 | 2455688 | 2011-05-06 | 347.58 |
| 40 | 2456041 | 2012-04-23 | 346.54 |
| 41 | 2456388 | 2013-04-05 | 345.69 |
| 42 | 2456731 | 2014-03-14 | 344.87 |
| 43 | 2457078 | 2015-02-24 | 344.73 |
| 44 | 2457418 | 2016-01-30 | 344.63 |
| 45 | 2457759 | 2017-01-05 | 344.55 |
| 46 | 2458104 | 2017-12-16 | 345.05 |
| 47 | 2458451 | 2018-11-28 | 345.31 |
| 48 | 2458798 | 2019-11-10 | 345.6 |
| 49 | 2459141 | 2020-10-18 | 346.32 |
| 50 | 2459492 | 2021-10-04 | 346.96 |
| 51 | 2459842 | 2022-09-19 | 347.31 |
| 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. |