| E | O (JD) | O (dat) | Period |
| -78 | 2411765 | 1891-02-01 | 400.51 |
| -77 | 2412158 | 1892-02-29 | 403.25 |
| -76 | 2412558 | 1893-04-04 | 404.35 |
| -75 | 2412955 | 1894-05-06 | 405.37 |
| -74 | 2413350 | 1895-06-05 | 405.25 |
| -73 | 2413774 | 1896-08-02 | 405.68 |
| -71 | 2414587 | 1898-10-24 | 406.74 |
| -70 | 2414994 | 1899-12-05 | 406.79 |
| -69 | 2415408 | 1901-01-23 | 406.19 |
| -68 | 2415800 | 1902-02-19 | 406.7 |
| -67 | 2416218 | 1903-04-13 | 405.14 |
| -66 | 2416623 | 1904-05-22 | 404.8 |
| -65 | 2417015 | 1905-06-18 | 405.93 |
| -64 | 2417408 | 1906-07-16 | 406.33 |
| -63 | 2417850 | 1907-10-01 | 407.42 |
| -62 | 2418225 | 1908-10-10 | 408.05 |
| -61 | 2418640 | 1909-11-29 | 408.55 |
| -60 | 2419074 | 1911-02-06 | 410.31 |
| -59 | 2419467 | 1912-03-05 | 411.17 |
| -58 | 2419880 | 1913-04-22 | 411.3 |
| -57 | 2420294 | 1914-06-10 | 413.02 |
| -56 | 2420688 | 1915-07-09 | 413.21 |
| -55 | 2421124 | 1916-09-17 | 413.61 |
| -54 | 2421534 | 1917-11-01 | 414.59 |
| -53 | 2421950 | 1918-12-22 | 414.55 |
| -52 | 2422363 | 1920-02-08 | 414.01 |
| -51 | 2422782 | 1921-04-02 | 413.28 |
| -50 | 2423200 | 1922-05-25 | 411.35 |
| -49 | 2423604 | 1923-07-03 | 410.46 |
| -48 | 2424016 | 1924-08-18 | 408.92 |
| -47 | 2424419 | 1925-09-25 | 407.02 |
| -46 | 2424826 | 1926-11-06 | 405.44 |
| -45 | 2425233 | 1927-12-18 | 404.36 |
| -44 | 2425642 | 1929-01-30 | 404.75 |
| -43 | 2426039 | 1930-03-03 | 404 |
| -42 | 2426433 | 1931-04-01 | 403.97 |
| -41 | 2426841 | 1932-05-13 | 403.5 |
| -40 | 2427245 | 1933-06-21 | 403.14 |
| -39 | 2427668 | 1934-08-18 | 403.52 |
| -38 | 2428052 | 1935-09-06 | 404.14 |
| -37 | 2428463 | 1936-10-21 | 404.03 |
| -36 | 2428859 | 1937-11-21 | 403.91 |
| -35 | 2429261 | 1938-12-28 | 403.45 |
| -34 | 2429676 | 1940-02-16 | 403.66 |
| -33 | 2430079 | 1941-03-25 | 405.08 |
| -32 | 2430474 | 1942-04-24 | 405.97 |
| -31 | 2430888 | 1943-06-12 | 407.52 |
| -30 | 2431282 | 1944-07-10 | 408.04 |
| -29 | 2431700 | 1945-09-01 | 408.47 |
| -28 | 2432110 | 1946-10-16 | 409.67 |
| -27 | 2432526 | 1947-12-06 | 410.19 |
| -26 | 2432942 | 1949-01-25 | 409.89 |
| -25 | 2433340 | 1950-02-27 | 410.75 |
| -24 | 2433752 | 1951-04-15 | 411.01 |
| -23 | 2434169 | 1952-06-05 | 411.48 |
| -22 | 2434569 | 1953-07-10 | 411.48 |
| -21 | 2434975 | 1954-08-20 | 411.8 |
| -20 | 2435404 | 1955-10-23 | 412.24 |
| -19 | 2435821 | 1956-12-13 | 412.97 |
| -18 | 2436232 | 1958-01-28 | 413.42 |
| -17 | 2436636 | 1959-03-08 | 414.05 |
| -16 | 2437049 | 1960-04-24 | 414.17 |
| -15 | 2437457 | 1961-06-06 | 413.26 |
| -14 | 2437889 | 1962-08-12 | 412.48 |
| -13 | 2438298 | 1963-09-25 | 411.99 |
| -12 | 2438711 | 1964-11-11 | 411.47 |
| -11 | 2439128 | 1966-01-02 | 410.55 |
| -10 | 2439530 | 1967-02-08 | 409.04 |
| -9 | 2439929 | 1968-03-13 | 406.75 |
| -8 | 2440340 | 1969-04-28 | 405.45 |
| -7 | 2440750 | 1970-06-12 | 404.38 |
| -6 | 2441160 | 1971-07-27 | 403.82 |
| -5 | 2441556 | 1972-08-26 | 403.94 |
| -4 | 2441951 | 1973-09-25 | 403.97 |
| -3 | 2442353 | 1974-11-01 | 403.96 |
| -2 | 2442760 | 1975-12-13 | 404.15 |
| -1 | 2443168 | 1977-01-24 | 404.99 |
| 0 | 2443574 | 1978-03-06 | 406.61 |
| 1 | 2443979 | 1979-04-15 | 408.41 |
| 2 | 2444389 | 1980-05-29 | 410.34 |
| 3 | 2444792 | 1981-07-06 | 411.72 |
| 4 | 2445205 | 1982-08-23 | 413.26 |
| 5 | 2445621 | 1983-10-13 | 415.59 |
| 6 | 2446042 | 1984-12-07 | 416.3 |
| 7 | 2446468 | 1986-02-06 | 416.71 |
| 8 | 2446877 | 1987-03-22 | 417.03 |
| 9 | 2447297 | 1988-05-15 | 416.07 |
| 10 | 2447732 | 1989-07-24 | 414.81 |
| 11 | 2448122 | 1990-08-18 | 412.65 |
| 12 | 2448539 | 1991-10-09 | 410.78 |
| 13 | 2448957 | 1992-11-30 | 408.86 |
| 14 | 2449359 | 1994-01-06 | 406.07 |
| 15 | 2449770 | 1995-02-21 | 404.18 |
| 16 | 2450164 | 1996-03-21 | 403.22 |
| 17 | 2450574 | 1997-05-05 | 401.65 |
| 18 | 2450968 | 1998-06-03 | 401.01 |
| 19 | 2451358 | 1999-06-28 | 400.59 |
| 20 | 2451770 | 2000-08-13 | 400.09 |
| 21 | 2452163 | 2001-09-10 | 400.58 |
| 22 | 2452568 | 2002-10-20 | 400.83 |
| 23 | 2452977 | 2003-12-03 | 401.25 |
| 24 | 2453368 | 2004-12-28 | 401.72 |
| 25 | 2453766 | 2006-01-30 | 402.19 |
| 26 | 2454176 | 2007-03-16 | 402.55 |
| 27 | 2454579 | 2008-04-22 | 402.87 |
| 28 | 2454974 | 2009-05-22 | 403.64 |
| 29 | 2455382 | 2010-07-04 | 404.33 |
| 30 | 2455797 | 2011-08-23 | 404.95 |
| 31 | 2456188 | 2012-09-17 | 405.52 |
| 32 | 2456599 | 2013-11-02 | 406.35 |
| 33 | 2457010 | 2014-12-18 | 407.07 |
| 34 | 2457406 | 2016-01-18 | 407.32 |
| 35 | 2457821 | 2017-03-08 | 407.66 |
| 36 | 2458233 | 2018-04-24 | 408.43 |
| 37 | 2458640 | 2019-06-05 | 408.38 |
| 38 | 2459047 | 2020-07-16 | 408.57 |
| 39 | 2459456 | 2021-08-29 | 409.32 |
| 40 | 2459865 | 2022-10-12 | 408.46 |
| 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. |