| E | O (JD) | O (dat) | Period |
| -86 | 2407770 | 1880-02-24 | 424.1 |
| -85 | 2408203 | 1881-05-02 | 422.22 |
| -82 | 2409475 | 1884-10-25 | 416.18 |
| -81 | 2409893 | 1885-12-17 | 411.43 |
| -80 | 2410315 | 1887-02-12 | 409.24 |
| -79 | 2410745 | 1888-04-17 | 408.12 |
| -78 | 2411139 | 1889-05-16 | 406.72 |
| -75 | 2412327 | 1892-08-16 | 405.52 |
| -69 | 2414776 | 1899-05-01 | 405.29 |
| -68 | 2415154 | 1900-05-14 | 405.08 |
| -64 | 2416787 | 1904-11-02 | 405.27 |
| -63 | 2417213 | 1906-01-02 | 406.21 |
| -62 | 2417616 | 1907-02-09 | 407.72 |
| -61 | 2418026 | 1908-03-25 | 408.88 |
| -60 | 2418429 | 1909-05-02 | 410.58 |
| -59 | 2418845 | 1910-06-22 | 411.27 |
| -58 | 2419252 | 1911-08-03 | 411.88 |
| -57 | 2419667 | 1912-09-21 | 413.49 |
| -56 | 2420080 | 1913-11-08 | 414.58 |
| -55 | 2420495 | 1914-12-28 | 416.04 |
| -54 | 2420910 | 1916-02-16 | 417.01 |
| -53 | 2421333 | 1917-04-14 | 418.34 |
| -52 | 2421753 | 1918-06-08 | 419.08 |
| -51 | 2422166 | 1919-07-26 | 419.23 |
| -50 | 2422592 | 1920-09-24 | 419.49 |
| -49 | 2423011 | 1921-11-17 | 419.14 |
| -48 | 2423436 | 1923-01-16 | 418.07 |
| -47 | 2423853 | 1924-03-08 | 417.04 |
| -46 | 2424262 | 1925-04-21 | 415.6 |
| -45 | 2424688 | 1926-06-21 | 413.39 |
| -44 | 2425098 | 1927-08-05 | 411.18 |
| -43 | 2425505 | 1928-09-15 | 409.01 |
| -42 | 2425917 | 1929-11-01 | 407.47 |
| -41 | 2426321 | 1930-12-10 | 405.3 |
| -40 | 2426722 | 1932-01-15 | 403.98 |
| -39 | 2427122 | 1933-02-18 | 403.34 |
| -38 | 2427526 | 1934-03-29 | 403.19 |
| -37 | 2427933 | 1935-05-10 | 403.35 |
| -36 | 2428318 | 1936-05-29 | 404.15 |
| -35 | 2428739 | 1937-07-24 | 405.7 |
| -34 | 2429138 | 1938-08-27 | 406.16 |
| -33 | 2429547 | 1939-10-10 | 406.61 |
| -32 | 2429955 | 1940-11-21 | 407.62 |
| -31 | 2430365 | 1942-01-05 | 408.66 |
| -30 | 2430786 | 1943-03-02 | 409.95 |
| -29 | 2431174 | 1944-03-24 | 411.25 |
| -28 | 2431584 | 1945-05-08 | 412.38 |
| -27 | 2432004 | 1946-07-02 | 412.59 |
| -26 | 2432412 | 1947-08-14 | 411.4 |
| -25 | 2432851 | 1948-10-26 | 410 |
| -24 | 2433253 | 1949-12-02 | 408.78 |
| -23 | 2433673 | 1951-01-26 | 405.89 |
| -22 | 2434069 | 1952-02-26 | 402.09 |
| -21 | 2434453 | 1953-03-16 | 398.86 |
| -20 | 2434856 | 1954-04-23 | 396.54 |
| -19 | 2435253 | 1955-05-25 | 396.47 |
| -18 | 2435644 | 1956-06-19 | 397.03 |
| -17 | 2436026 | 1957-07-06 | 399.65 |
| -16 | 2436423 | 1958-08-07 | 403.53 |
| -15 | 2436837 | 1959-09-25 | 406.65 |
| -14 | 2437245 | 1960-11-06 | 410.1 |
| -13 | 2437655 | 1961-12-21 | 412.68 |
| -12 | 2438077 | 1963-02-16 | 415.76 |
| -11 | 2438510 | 1964-04-24 | 418.15 |
| -10 | 2438921 | 1965-06-09 | 419.82 |
| -9 | 2439338 | 1966-07-31 | 420.09 |
| -8 | 2439739 | 1967-09-05 | 422.45 |
| -7 | 2440178 | 1968-11-17 | 423.43 |
| -6 | 2440611 | 1970-01-24 | 424.19 |
| -5 | 2441036 | 1971-03-25 | 425.44 |
| -4 | 2441431 | 1972-04-23 | 426.42 |
| -3 | 2441906 | 1973-08-11 | 426.96 |
| -2 | 2442316 | 1974-09-25 | 425.95 |
| -1 | 2442737 | 1975-11-20 | 424.75 |
| 0 | 2443160 | 1977-01-16 | 423.84 |
| 1 | 2443591 | 1978-03-23 | 422.45 |
| 2 | 2444015 | 1979-05-21 | 419.1 |
| 3 | 2444435 | 1980-07-14 | 417.77 |
| 4 | 2444843 | 1981-08-26 | 415.75 |
| 5 | 2445263 | 1982-10-20 | 413.76 |
| 6 | 2445673 | 1983-12-04 | 411.56 |
| 7 | 2446083 | 1985-01-17 | 409.82 |
| 8 | 2446488 | 1986-02-26 | 408.31 |
| 9 | 2446897 | 1987-04-11 | 407.25 |
| 10 | 2447309 | 1988-05-27 | 406.26 |
| 11 | 2447711 | 1989-07-03 | 406.53 |
| 12 | 2448114 | 1990-08-10 | 407.13 |
| 13 | 2448515 | 1991-09-15 | 408.67 |
| 14 | 2448921 | 1992-10-25 | 409.74 |
| 15 | 2449330 | 1993-12-08 | 410.85 |
| 16 | 2449751 | 1995-02-02 | 411.44 |
| 17 | 2450164 | 1996-03-21 | 412.76 |
| 18 | 2450591 | 1997-05-22 | 413.75 |
| 19 | 2450996 | 1998-07-01 | 413.81 |
| 20 | 2451408 | 1999-08-17 | 413.27 |
| 21 | 2451804 | 2000-09-16 | 413.55 |
| 22 | 2452237 | 2001-11-23 | 413.34 |
| 23 | 2452651 | 2003-01-11 | 412.39 |
| 24 | 2453057 | 2004-02-21 | 412.39 |
| 25 | 2453465 | 2005-04-04 | 412.97 |
| 26 | 2453901 | 2006-06-14 | 414.15 |
| 27 | 2454299 | 2007-07-17 | 412.75 |
| 28 | 2454697 | 2008-08-18 | 412 |
| 29 | 2455112 | 2009-10-07 | 411.43 |
| 30 | 2455543 | 2010-12-12 | 411.31 |
| 31 | 2455971 | 2012-02-13 | 409.16 |
| 32 | 2456352 | 2013-02-28 | 407.93 |
| 33 | 2456756 | 2014-04-08 | 406.38 |
| 34 | 2457167 | 2015-05-24 | 404.25 |
| 35 | 2457593 | 2016-07-23 | 402.42 |
| 36 | 2457966 | 2017-07-31 | 401.63 |
| 37 | 2458363 | 2018-09-01 | 402.38 |
| 38 | 2458771 | 2019-10-14 | 401.57 |
| 39 | 2459175 | 2020-11-21 | 400.18 |
| 40 | 2459579 | 2021-12-30 | 399 |
| 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. |