| E | O (JD) | O (dat) | Period |
| -97 | 2411155 | 1889-06-01 | 313.42 |
| -96 | 2411478 | 1890-04-20 | 313.74 |
| -90 | 2413345 | 1895-05-31 | 313.82 |
| -89 | 2413662 | 1896-04-12 | 313.97 |
| -88 | 2413974 | 1897-02-18 | 314.21 |
| -85 | 2414926 | 1899-09-28 | 314.38 |
| -84 | 2415240 | 1900-08-08 | 314.86 |
| -83 | 2415551 | 1901-06-15 | 315.62 |
| -82 | 2415869 | 1902-04-29 | 315.37 |
| -81 | 2416189 | 1903-03-15 | 315.09 |
| -80 | 2416504 | 1904-01-24 | 314.57 |
| -78 | 2417141 | 1905-10-22 | 314.52 |
| -76 | 2417756 | 1907-06-29 | 314.49 |
| -75 | 2418073 | 1908-05-11 | 314.25 |
| -74 | 2418385 | 1909-03-19 | 314.3 |
| -70 | 2419643 | 1912-08-28 | 313.94 |
| -69 | 2419960 | 1913-07-11 | 313.6 |
| -68 | 2420276 | 1914-05-23 | 313.56 |
| -67 | 2420587 | 1915-03-30 | 313.19 |
| -65 | 2421224 | 1916-12-26 | 313.05 |
| -62 | 2422148 | 1919-07-08 | 312.81 |
| -61 | 2422459 | 1920-05-14 | 312.61 |
| -60 | 2422771 | 1921-03-22 | 312.88 |
| -59 | 2423084 | 1922-01-29 | 313.04 |
| -58 | 2423404 | 1922-12-15 | 313.54 |
| -57 | 2423720 | 1923-10-27 | 315.57 |
| -56 | 2424027 | 1924-08-29 | 315.94 |
| -55 | 2424352 | 1925-07-20 | 316.22 |
| -54 | 2424658 | 1926-05-22 | 316.18 |
| -53 | 2424981 | 1927-04-10 | 315.83 |
| -52 | 2425309 | 1928-03-03 | 315.18 |
| -51 | 2425613 | 1929-01-01 | 314.54 |
| -50 | 2425931 | 1929-11-15 | 313.44 |
| -49 | 2426244 | 1930-09-24 | 313.18 |
| -48 | 2426556 | 1931-08-02 | 312.19 |
| -47 | 2426860 | 1932-06-01 | 311.84 |
| -46 | 2427172 | 1933-04-09 | 312.17 |
| -45 | 2427484 | 1934-02-15 | 311.95 |
| -44 | 2427804 | 1935-01-01 | 312.26 |
| -43 | 2428111 | 1935-11-04 | 312.7 |
| -42 | 2428428 | 1936-09-16 | 313.61 |
| -41 | 2428739 | 1937-07-24 | 314 |
| -40 | 2429048 | 1938-05-29 | 314.36 |
| -39 | 2429365 | 1939-04-11 | 315.44 |
| -38 | 2429679 | 1940-02-19 | 316.83 |
| -37 | 2430002 | 1941-01-07 | 317.61 |
| -36 | 2430315 | 1941-11-16 | 318.26 |
| -35 | 2430631 | 1942-09-28 | 318.26 |
| -34 | 2430964 | 1943-08-27 | 318.34 |
| -33 | 2431283 | 1944-07-11 | 318.16 |
| -32 | 2431597 | 1945-05-21 | 317.47 |
| -31 | 2431911 | 1946-03-31 | 317.28 |
| -30 | 2432220 | 1947-02-03 | 316.83 |
| -29 | 2432547 | 1947-12-27 | 316.28 |
| -28 | 2432861 | 1948-11-05 | 316.33 |
| -27 | 2433172 | 1949-09-12 | 316.34 |
| -26 | 2433494 | 1950-07-31 | 316.28 |
| -25 | 2433811 | 1951-06-13 | 316.51 |
| -24 | 2434129 | 1952-04-26 | 316.15 |
| -23 | 2434442 | 1953-03-05 | 316.48 |
| -22 | 2434754 | 1954-01-11 | 317.03 |
| -21 | 2435070 | 1954-11-23 | 316.9 |
| -20 | 2435394 | 1955-10-13 | 317.07 |
| -19 | 2435707 | 1956-08-21 | 317.4 |
| -18 | 2436027 | 1957-07-07 | 317.73 |
| -17 | 2436351 | 1958-05-27 | 317.8 |
| -16 | 2436661 | 1959-04-02 | 317.63 |
| -15 | 2436979 | 1960-02-14 | 317.28 |
| -14 | 2437299 | 1960-12-30 | 317.25 |
| -13 | 2437615 | 1961-11-11 | 316.75 |
| -12 | 2437931 | 1962-09-23 | 316.34 |
| -11 | 2438249 | 1963-08-07 | 316.16 |
| -10 | 2438565 | 1964-06-18 | 315.75 |
| -9 | 2438882 | 1965-05-01 | 315.3 |
| -8 | 2439194 | 1966-03-09 | 315.18 |
| -7 | 2439509 | 1967-01-18 | 315.06 |
| -6 | 2439822 | 1967-11-27 | 314.55 |
| -5 | 2440139 | 1968-10-09 | 314.15 |
| -4 | 2440452 | 1969-08-18 | 313.94 |
| -3 | 2440770 | 1970-07-02 | 314.43 |
| -2 | 2441085 | 1971-05-13 | 314.72 |
| -1 | 2441391 | 1972-03-14 | 315 |
| 0 | 2441704 | 1973-01-21 | 315.62 |
| 1 | 2442020 | 1973-12-03 | 316.64 |
| 2 | 2442346 | 1974-10-25 | 317.05 |
| 3 | 2442660 | 1975-09-04 | 317.39 |
| 4 | 2442975 | 1976-07-15 | 318.74 |
| 5 | 2443300 | 1977-06-05 | 319.28 |
| 6 | 2443624 | 1978-04-25 | 318.55 |
| 7 | 2443932 | 1979-02-27 | 317.85 |
| 8 | 2444245 | 1980-01-06 | 317.42 |
| 9 | 2444584 | 1980-12-10 | 316.93 |
| 10 | 2444899 | 1981-10-21 | 315.71 |
| 11 | 2445197 | 1982-08-15 | 315.41 |
| 12 | 2445517 | 1983-07-01 | 314.37 |
| 13 | 2445831 | 1984-05-10 | 314.25 |
| 14 | 2446150 | 1985-03-25 | 314.81 |
| 15 | 2446454 | 1986-01-23 | 315.62 |
| 16 | 2446780 | 1986-12-15 | 316.24 |
| 17 | 2447071 | 1987-10-02 | 315.6 |
| 18 | 2447411 | 1988-09-06 | 315.56 |
| 19 | 2447746 | 1989-08-07 | 315.24 |
| 20 | 2448045 | 1990-06-02 | 314.93 |
| 21 | 2448355 | 1991-04-08 | 314.26 |
| 22 | 2448661 | 1992-02-08 | 314.05 |
| 23 | 2448983 | 1992-12-26 | 312.85 |
| 24 | 2449293 | 1993-11-01 | 313.37 |
| 25 | 2449603 | 1994-09-07 | 315 |
| 26 | 2449921 | 1995-07-22 | 315.99 |
| 27 | 2450233 | 1996-05-29 | 316.78 |
| 28 | 2450553 | 1997-04-14 | 317 |
| 29 | 2450879 | 1998-03-06 | 318.12 |
| 30 | 2451195 | 1999-01-16 | 318.86 |
| 31 | 2451512 | 1999-11-29 | 319.48 |
| 32 | 2451829 | 2000-10-11 | 320.05 |
| 33 | 2452144 | 2001-08-22 | 320.12 |
| 34 | 2452474 | 2002-07-18 | 320.04 |
| 35 | 2452792 | 2003-06-01 | 320.06 |
| 36 | 2453117 | 2004-04-21 | 320.16 |
| 37 | 2453437 | 2005-03-07 | 319.91 |
| 38 | 2453755 | 2006-01-19 | 319.09 |
| 39 | 2454072 | 2006-12-02 | 317.75 |
| 40 | 2454387 | 2007-10-13 | 316.84 |
| 41 | 2454711 | 2008-09-01 | 315.6 |
| 42 | 2455026 | 2009-07-13 | 315.28 |
| 43 | 2455336 | 2010-05-19 | 315.51 |
| 44 | 2455648 | 2011-03-27 | 315.82 |
| 45 | 2455962 | 2012-02-04 | 315.62 |
| 46 | 2456271 | 2012-12-09 | 316 |
| 47 | 2456597 | 2013-10-31 | 317.33 |
| 48 | 2456921 | 2014-09-20 | 318.25 |
| 49 | 2457238 | 2015-08-03 | 319.11 |
| 50 | 2457543 | 2016-06-03 | 319.58 |
| 51 | 2457872 | 2017-04-28 | 320.14 |
| 52 | 2458201 | 2018-03-23 | 320.16 |
| 53 | 2458512 | 2019-01-28 | 320.31 |
| 54 | 2458836 | 2019-12-18 | 320.88 |
| 55 | 2459153 | 2020-10-30 | 321.6 |
| 56 | 2459479 | 2021-09-21 | 320.75 |
| 57 | 2459800 | 2022-08-08 | 320.37 |
| 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. |