| E | O (JD) | O (dat) | Period |
| -71 | 2411462 | 1890-04-04 | 382.07 |
| -68 | 2412614 | 1893-05-30 | 381.64 |
| -67 | 2412985 | 1894-06-05 | 381.93 |
| -66 | 2413350 | 1895-06-05 | 384.27 |
| -65 | 2413749 | 1896-07-08 | 387.22 |
| -64 | 2414128 | 1897-07-22 | 390.04 |
| -63 | 2414515 | 1898-08-13 | 390.96 |
| -60 | 2415695 | 1901-11-06 | 391.8 |
| -57 | 2416900 | 1905-02-23 | 392.13 |
| -55 | 2417670 | 1907-04-04 | 392.38 |
| -54 | 2418048 | 1908-04-16 | 393 |
| -53 | 2418454 | 1909-05-27 | 391.39 |
| -52 | 2418834 | 1910-06-11 | 388.67 |
| -51 | 2419226 | 1911-07-08 | 389.86 |
| -50 | 2419630 | 1912-08-15 | 389.66 |
| -49 | 2420010 | 1913-08-30 | 390.36 |
| -48 | 2420390 | 1914-09-14 | 391.32 |
| -47 | 2420786 | 1915-10-15 | 390.59 |
| -42 | 2422730 | 1921-02-09 | 390.86 |
| -41 | 2423146 | 1922-04-01 | 391.45 |
| -40 | 2423523 | 1923-04-13 | 391 |
| -39 | 2423926 | 1924-05-20 | 391.56 |
| -38 | 2424313 | 1925-06-11 | 390.79 |
| -37 | 2424699 | 1926-07-02 | 388.64 |
| -36 | 2425079 | 1927-07-17 | 388.72 |
| -35 | 2425485 | 1928-08-26 | 388.08 |
| -34 | 2425862 | 1929-09-07 | 388.22 |
| -33 | 2426248 | 1930-09-28 | 389.14 |
| -32 | 2426643 | 1931-10-28 | 387.46 |
| -31 | 2427029 | 1932-11-17 | 386.06 |
| -30 | 2427418 | 1933-12-11 | 387.68 |
| -29 | 2427808 | 1935-01-05 | 388.56 |
| -27 | 2428568 | 1937-02-03 | 387.75 |
| -26 | 2428956 | 1938-02-26 | 386.87 |
| -25 | 2429357 | 1939-04-03 | 386.44 |
| -24 | 2429751 | 1940-05-01 | 387.21 |
| -23 | 2430125 | 1941-05-10 | 389.57 |
| -22 | 2430512 | 1942-06-01 | 389.29 |
| -21 | 2430897 | 1943-06-21 | 386.5 |
| -20 | 2431287 | 1944-07-15 | 386.78 |
| -19 | 2431691 | 1945-08-23 | 389.71 |
| -18 | 2432072 | 1946-09-08 | 390.71 |
| -17 | 2432447 | 1947-09-18 | 389.71 |
| -16 | 2432844 | 1948-10-19 | 387.51 |
| -15 | 2433249 | 1949-11-28 | 386.58 |
| -14 | 2433630 | 1950-12-14 | 388.36 |
| -13 | 2434010 | 1951-12-29 | 387.79 |
| -12 | 2434393 | 1953-01-15 | 385.36 |
| -11 | 2434782 | 1954-02-08 | 385.07 |
| -10 | 2435174 | 1955-03-07 | 387.21 |
| -9 | 2435546 | 1956-03-13 | 389.28 |
| -8 | 2435942 | 1957-04-13 | 391.35 |
| -7 | 2436328 | 1958-05-04 | 392.71 |
| -6 | 2436733 | 1959-06-13 | 393.79 |
| -5 | 2437120 | 1960-07-04 | 394.94 |
| -4 | 2437534 | 1961-08-22 | 395.01 |
| -3 | 2437920 | 1962-09-12 | 394.14 |
| -2 | 2438313 | 1963-10-10 | 392.57 |
| -1 | 2438704 | 1964-11-04 | 390.93 |
| 0 | 2439096 | 1965-12-01 | 390.42 |
| 1 | 2439483 | 1966-12-23 | 389.07 |
| 2 | 2439866 | 1968-01-10 | 386.5 |
| 3 | 2440261 | 1969-02-08 | 386.07 |
| 4 | 2440659 | 1970-03-13 | 386.15 |
| 5 | 2441021 | 1971-03-10 | 386.22 |
| 6 | 2441407 | 1972-03-30 | 385.65 |
| 7 | 2441798 | 1973-04-25 | 384.64 |
| 8 | 2442187 | 1974-05-19 | 386.06 |
| 9 | 2442569 | 1975-06-05 | 388.92 |
| 10 | 2442957 | 1976-06-27 | 389.64 |
| 11 | 2443348 | 1977-07-23 | 389.36 |
| 12 | 2443737 | 1978-08-16 | 390.14 |
| 13 | 2444136 | 1979-09-19 | 391.21 |
| 14 | 2444524 | 1980-10-11 | 392.72 |
| 15 | 2444912 | 1981-11-03 | 394.79 |
| 16 | 2445306 | 1982-12-02 | 394.29 |
| 17 | 2445697 | 1983-12-28 | 392.64 |
| 18 | 2446106 | 1985-02-09 | 392.35 |
| 19 | 2446506 | 1986-03-16 | 391.78 |
| 20 | 2446887 | 1987-04-01 | 391.92 |
| 21 | 2447270 | 1988-04-18 | 390.93 |
| 22 | 2447659 | 1989-05-12 | 389.14 |
| 23 | 2448044 | 1990-06-01 | 389.79 |
| 24 | 2448446 | 1991-07-08 | 392.01 |
| 25 | 2448830 | 1992-07-26 | 393.51 |
| 26 | 2449230 | 1993-08-30 | 393.79 |
| 27 | 2449620 | 1994-09-24 | 393.14 |
| 28 | 2450025 | 1995-11-03 | 392.42 |
| 29 | 2450413 | 1996-11-25 | 391.78 |
| 30 | 2450803 | 1997-12-20 | 390.64 |
| 31 | 2451191 | 1999-01-12 | 388.93 |
| 32 | 2451579 | 2000-02-04 | 388 |
| 33 | 2451966 | 2001-02-25 | 389.57 |
| 34 | 2452353 | 2002-03-19 | 390.58 |
| 35 | 2452737 | 2003-04-07 | 390.29 |
| 36 | 2453133 | 2004-05-07 | 390.08 |
| 37 | 2453537 | 2005-06-15 | 388.64 |
| 38 | 2453925 | 2006-07-08 | 388.21 |
| 39 | 2454309 | 2007-07-27 | 389.06 |
| 40 | 2454697 | 2008-08-18 | 388.56 |
| 41 | 2455063 | 2009-08-19 | 388.57 |
| 42 | 2455462 | 2010-09-22 | 388.71 |
| 43 | 2455855 | 2011-10-20 | 388.57 |
| 44 | 2456255 | 2012-11-23 | 390.08 |
| 45 | 2456647 | 2013-12-20 | 390.72 |
| 46 | 2457029 | 2015-01-06 | 389.36 |
| 47 | 2457417 | 2016-01-29 | 388.64 |
| 48 | 2457804 | 2017-02-19 | 387.85 |
| 49 | 2458191 | 2018-03-13 | 387.14 |
| 50 | 2458577 | 2019-04-03 | 387.2 |
| 51 | 2458974 | 2020-05-04 | 387.73 |
| 52 | 2459358 | 2021-05-23 | 388.07 |
| 53 | 2459738 | 2022-06-07 | 388.27 |
| 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. |