| E | O (JD) | O (dat) | Period |
| -76 | 2415280 | 1900-09-17 | 392.29 |
| -75 | 2415660 | 1901-10-02 | 390.82 |
| -74 | 2416040 | 1902-10-17 | 390.98 |
| -73 | 2416447 | 1903-11-28 | 390.72 |
| -72 | 2416841 | 1904-12-26 | 390.93 |
| -71 | 2417236 | 1906-01-25 | 390.59 |
| -70 | 2417610 | 1907-02-03 | 391.48 |
| -69 | 2418010 | 1908-03-09 | 391.5 |
| -68 | 2418396 | 1909-03-30 | 390.6 |
| -67 | 2418793 | 1910-05-01 | 391.12 |
| -66 | 2419174 | 1911-05-17 | 391.77 |
| -65 | 2419581 | 1912-06-27 | 392.36 |
| -64 | 2419966 | 1913-07-17 | 392.42 |
| -63 | 2420351 | 1914-08-06 | 392.72 |
| -62 | 2420756 | 1915-09-15 | 392.86 |
| -61 | 2421148 | 1916-10-11 | 392.95 |
| -60 | 2421534 | 1917-11-01 | 392.3 |
| -59 | 2421933 | 1918-12-05 | 392.11 |
| -58 | 2422323 | 1919-12-30 | 392.05 |
| -57 | 2422719 | 1921-01-29 | 391.45 |
| -56 | 2423106 | 1922-02-20 | 391.79 |
| -55 | 2423495 | 1923-03-16 | 392.25 |
| -54 | 2423881 | 1924-04-05 | 392.07 |
| -53 | 2424282 | 1925-05-11 | 391.86 |
| -52 | 2424671 | 1926-06-04 | 391.82 |
| -51 | 2425070 | 1927-07-08 | 391.71 |
| -50 | 2425465 | 1928-08-06 | 391.74 |
| -49 | 2425851 | 1929-08-27 | 391.45 |
| -48 | 2426235 | 1930-09-15 | 391.16 |
| -47 | 2426631 | 1931-10-16 | 390.8 |
| -46 | 2427016 | 1932-11-04 | 389.98 |
| -45 | 2427414 | 1933-12-07 | 389.99 |
| -44 | 2427802 | 1934-12-30 | 390.25 |
| -43 | 2428200 | 1936-02-01 | 389.69 |
| -42 | 2428581 | 1937-02-16 | 388.24 |
| -41 | 2428964 | 1938-03-06 | 388.04 |
| -40 | 2429362 | 1939-04-08 | 387.58 |
| -39 | 2429752 | 1940-05-02 | 387.69 |
| -38 | 2430128 | 1941-05-13 | 388.06 |
| -37 | 2430503 | 1942-05-23 | 389 |
| -36 | 2430909 | 1943-07-03 | 389.59 |
| -35 | 2431297 | 1944-07-25 | 390.18 |
| -34 | 2431688 | 1945-08-20 | 391.28 |
| -33 | 2432083 | 1946-09-19 | 391.73 |
| -32 | 2432474 | 1947-10-15 | 391.79 |
| -31 | 2432864 | 1948-11-08 | 390.96 |
| -30 | 2433261 | 1949-12-10 | 391.03 |
| -29 | 2433654 | 1951-01-07 | 390.46 |
| -28 | 2434030 | 1952-01-18 | 389.95 |
| -27 | 2434426 | 1953-02-17 | 389.58 |
| -26 | 2434816 | 1954-03-14 | 389.28 |
| -25 | 2435211 | 1955-04-13 | 389.24 |
| -24 | 2435592 | 1956-04-28 | 389.42 |
| -23 | 2435983 | 1957-05-24 | 389.38 |
| -22 | 2436371 | 1958-06-16 | 388.77 |
| -21 | 2436761 | 1959-07-11 | 388.51 |
| -20 | 2437156 | 1960-08-09 | 388.19 |
| -19 | 2437543 | 1961-08-31 | 388.26 |
| -18 | 2437923 | 1962-09-15 | 388.02 |
| -17 | 2438313 | 1963-10-10 | 388.02 |
| -16 | 2438702 | 1964-11-02 | 387.87 |
| -15 | 2439088 | 1965-11-23 | 388.07 |
| -14 | 2439477 | 1966-12-17 | 388.67 |
| -13 | 2439866 | 1968-01-10 | 389.55 |
| -12 | 2440257 | 1969-02-04 | 390.3 |
| -11 | 2440643 | 1970-02-25 | 390.89 |
| -10 | 2441037 | 1971-03-26 | 391.88 |
| -9 | 2441427 | 1972-04-19 | 392.45 |
| -8 | 2441823 | 1973-05-20 | 392.65 |
| -7 | 2442220 | 1974-06-21 | 392.5 |
| -6 | 2442608 | 1975-07-14 | 392.48 |
| -5 | 2443009 | 1976-08-18 | 391.75 |
| -4 | 2443398 | 1977-09-11 | 391.57 |
| -3 | 2443785 | 1978-10-03 | 391.05 |
| -2 | 2444172 | 1979-10-25 | 390.52 |
| -1 | 2444567 | 1980-11-23 | 390.35 |
| 0 | 2444950 | 1981-12-11 | 390.34 |
| 1 | 2445351 | 1983-01-16 | 391 |
| 2 | 2445738 | 1984-02-07 | 391.34 |
| 3 | 2446125 | 1985-02-28 | 391.81 |
| 4 | 2446517 | 1986-03-27 | 391.77 |
| 5 | 2446914 | 1987-04-28 | 391.81 |
| 6 | 2447309 | 1988-05-27 | 391.45 |
| 7 | 2447695 | 1989-06-17 | 391.43 |
| 8 | 2448093 | 1990-07-20 | 391.26 |
| 9 | 2448479 | 1991-08-10 | 391.01 |
| 10 | 2448868 | 1992-09-02 | 390.69 |
| 11 | 2449260 | 1993-09-29 | 390.69 |
| 12 | 2449648 | 1994-10-22 | 391.17 |
| 13 | 2450040 | 1995-11-18 | 391.49 |
| 14 | 2450434 | 1996-12-16 | 391.55 |
| 15 | 2450824 | 1998-01-10 | 391.45 |
| 16 | 2451216 | 1999-02-06 | 391.62 |
| 17 | 2451613 | 2000-03-09 | 391.5 |
| 18 | 2452007 | 2001-04-07 | 391.66 |
| 19 | 2452386 | 2002-04-21 | 392.07 |
| 20 | 2452778 | 2003-05-18 | 392.19 |
| 21 | 2453177 | 2004-06-20 | 392.25 |
| 22 | 2453562 | 2005-07-10 | 392.09 |
| 23 | 2453963 | 2006-08-15 | 392.4 |
| 24 | 2454361 | 2007-09-17 | 392.97 |
| 25 | 2454746 | 2008-10-06 | 392.44 |
| 26 | 2455139 | 2009-11-03 | 391.51 |
| 27 | 2455527 | 2010-11-26 | 391.1 |
| 28 | 2455923 | 2011-12-27 | 390.08 |
| 29 | 2456318 | 2013-01-25 | 389.46 |
| 30 | 2456701 | 2014-02-12 | 389.43 |
| 31 | 2457085 | 2015-03-03 | 388.45 |
| 32 | 2457479 | 2016-03-31 | 387.69 |
| 33 | 2457864 | 2017-04-20 | 386.75 |
| 34 | 2458252 | 2018-05-13 | 386.39 |
| 35 | 2458645 | 2019-06-10 | 386.45 |
| 36 | 2459019 | 2020-06-18 | 386.19 |
| 37 | 2459407 | 2021-07-11 | 385.32 |
| 38 | 2459791 | 2022-07-30 | 384.97 |
| 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. |