| E | O (JD) | O (dat) | Period |
| -78 | 2410116 | 1886-07-28 | 393.88 |
| -75 | 2411301 | 1889-10-25 | 394.89 |
| -71 | 2412867 | 1894-02-07 | 395.18 |
| -70 | 2413286 | 1895-04-02 | 394.37 |
| -69 | 2413665 | 1896-04-15 | 394.3 |
| -68 | 2414069 | 1897-05-24 | 394.58 |
| -66 | 2414851 | 1899-07-15 | 392.5 |
| -65 | 2415243 | 1900-08-11 | 391.38 |
| -64 | 2415637 | 1901-09-09 | 391.51 |
| -63 | 2416028 | 1902-10-05 | 391.25 |
| -62 | 2416405 | 1903-10-17 | 392.43 |
| -61 | 2416808 | 1904-11-23 | 392.11 |
| -60 | 2417190 | 1905-12-10 | 392.14 |
| -58 | 2417990 | 1908-02-18 | 392.65 |
| -57 | 2418383 | 1909-03-17 | 392.43 |
| -54 | 2419555 | 1912-06-01 | 392.5 |
| -51 | 2420737 | 1915-08-27 | 392.19 |
| -48 | 2421905 | 1918-11-07 | 391.7 |
| -47 | 2422296 | 1919-12-03 | 392.05 |
| -46 | 2422692 | 1921-01-02 | 391.85 |
| -45 | 2423077 | 1922-01-22 | 392.5 |
| -44 | 2423480 | 1923-03-01 | 393.29 |
| -43 | 2423867 | 1924-03-22 | 393.79 |
| -42 | 2424262 | 1925-04-21 | 394.78 |
| -41 | 2424660 | 1926-05-24 | 394.06 |
| -40 | 2425047 | 1927-06-15 | 394.71 |
| -39 | 2425454 | 1928-07-26 | 394.71 |
| -38 | 2425842 | 1929-08-18 | 393.57 |
| -37 | 2426232 | 1930-09-12 | 393.29 |
| -36 | 2426641 | 1931-10-26 | 391.58 |
| -35 | 2427014 | 1932-11-02 | 390.58 |
| -34 | 2427418 | 1933-12-11 | 390.15 |
| -33 | 2427795 | 1934-12-23 | 389.14 |
| -32 | 2428188 | 1936-01-20 | 390.49 |
| -31 | 2428576 | 1937-02-11 | 390.78 |
| -30 | 2428960 | 1938-03-02 | 390.21 |
| -29 | 2429361 | 1939-04-07 | 390.86 |
| -28 | 2429761 | 1940-05-11 | 391.36 |
| -27 | 2430142 | 1941-05-27 | 392.79 |
| -26 | 2430534 | 1942-06-23 | 391.86 |
| -25 | 2430921 | 1943-07-15 | 389.36 |
| -24 | 2431322 | 1944-08-19 | 389.44 |
| -23 | 2431713 | 1945-09-14 | 389.79 |
| -22 | 2432094 | 1946-09-30 | 388.99 |
| -21 | 2432479 | 1947-10-20 | 386.99 |
| -20 | 2432876 | 1948-11-20 | 385.14 |
| -19 | 2433257 | 1949-12-06 | 386 |
| -18 | 2433644 | 1950-12-28 | 386.57 |
| -17 | 2434017 | 1952-01-05 | 385.57 |
| -16 | 2434410 | 1953-02-01 | 385.94 |
| -15 | 2434801 | 1954-02-27 | 387.58 |
| -14 | 2435184 | 1955-03-17 | 389.08 |
| -13 | 2435569 | 1956-04-05 | 389.43 |
| -12 | 2435967 | 1957-05-08 | 388.92 |
| -11 | 2436360 | 1958-06-05 | 389.64 |
| -10 | 2436748 | 1959-06-28 | 390.71 |
| -9 | 2437131 | 1960-07-15 | 390.29 |
| -8 | 2437525 | 1961-08-13 | 388.5 |
| -7 | 2437915 | 1962-09-07 | 387.93 |
| -6 | 2438308 | 1963-10-05 | 388.79 |
| -5 | 2438692 | 1964-10-23 | 389.79 |
| -4 | 2439074 | 1965-11-09 | 390.01 |
| -3 | 2439465 | 1966-12-05 | 388.93 |
| -2 | 2439857 | 1968-01-01 | 389.78 |
| -1 | 2440256 | 1969-02-03 | 391.99 |
| 0 | 2440644 | 1970-02-26 | 392.49 |
| 1 | 2441024 | 1971-03-13 | 392.29 |
| 2 | 2441433 | 1972-04-25 | 393.07 |
| 3 | 2441821 | 1973-05-18 | 393.07 |
| 4 | 2442213 | 1974-06-14 | 396.29 |
| 5 | 2442601 | 1975-07-07 | 399.36 |
| 6 | 2443015 | 1976-08-24 | 399.01 |
| 7 | 2443388 | 1977-09-01 | 400.14 |
| 8 | 2443828 | 1978-11-15 | 401.56 |
| 9 | 2444220 | 1979-12-12 | 400.85 |
| 10 | 2444620 | 1981-01-15 | 401.14 |
| 11 | 2445016 | 1982-02-15 | 399.14 |
| 12 | 2445420 | 1983-03-26 | 395.79 |
| 13 | 2445808 | 1984-04-17 | 396.93 |
| 14 | 2446211 | 1985-05-25 | 395.36 |
| 15 | 2446593 | 1986-06-11 | 393.15 |
| 16 | 2446996 | 1987-07-19 | 393.94 |
| 17 | 2447401 | 1988-08-27 | 394.43 |
| 18 | 2447770 | 1989-08-31 | 394.06 |
| 19 | 2448170 | 1990-10-05 | 393.71 |
| 20 | 2448573 | 1991-11-12 | 392.71 |
| 21 | 2448968 | 1992-12-11 | 393.93 |
| 22 | 2449353 | 1993-12-31 | 394.86 |
| 23 | 2449748 | 1995-01-30 | 393.36 |
| 24 | 2450147 | 1996-03-04 | 392.94 |
| 25 | 2450539 | 1997-03-31 | 393.72 |
| 26 | 2450929 | 1998-04-25 | 393.65 |
| 27 | 2451321 | 1999-05-22 | 392.79 |
| 28 | 2451721 | 2000-06-25 | 391.99 |
| 29 | 2452112 | 2001-07-21 | 391.78 |
| 30 | 2452500 | 2002-08-13 | 392.14 |
| 31 | 2452894 | 2003-09-11 | 391.36 |
| 32 | 2453280 | 2004-10-01 | 390 |
| 33 | 2453673 | 2005-10-29 | 389.43 |
| 34 | 2454067 | 2006-11-27 | 389.29 |
| 35 | 2454454 | 2007-12-19 | 389.15 |
| 36 | 2454839 | 2009-01-07 | 389.86 |
| 37 | 2455225 | 2010-01-28 | 389.71 |
| 38 | 2455619 | 2011-02-26 | 389.42 |
| 39 | 2456003 | 2012-03-16 | 391.42 |
| 40 | 2456408 | 2013-04-25 | 392.99 |
| 41 | 2456788 | 2014-05-10 | 392.93 |
| 42 | 2457185 | 2015-06-11 | 392.86 |
| 43 | 2457588 | 2016-07-18 | 392.29 |
| 44 | 2457978 | 2017-08-12 | 392.29 |
| 45 | 2458367 | 2018-09-05 | 392.94 |
| 46 | 2458755 | 2019-09-28 | 391.88 |
| 47 | 2459148 | 2020-10-25 | 390.24 |
| 48 | 2459540 | 2021-11-21 | 390.58 |
| 49 | 2459934 | 2022-12-20 | 390.89 |
| 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. |