| E | O (JD) | O (dat) | Period |
| -110 | 2401697 | 1863-07-10 | 384.29 |
| -109 | 2402081 | 1864-07-28 | 382.87 |
| -108 | 2402481 | 1865-09-01 | 381.98 |
| -107 | 2402869 | 1866-09-24 | 382.55 |
| -105 | 2403627 | 1868-10-21 | 382.83 |
| -104 | 2404000 | 1869-10-29 | 383.79 |
| -103 | 2404387 | 1870-11-20 | 384.35 |
| -98 | 2406287 | 1876-02-02 | 384.88 |
| -97 | 2406679 | 1877-02-28 | 388.78 |
| -91 | 2409013 | 1883-07-21 | 391.26 |
| -90 | 2409405 | 1884-08-16 | 393.07 |
| -88 | 2410177 | 1886-09-27 | 394.95 |
| -81 | 2413001 | 1894-06-21 | 395.91 |
| -80 | 2413384 | 1895-07-09 | 398.36 |
| -79 | 2413799 | 1896-08-27 | 399.3 |
| -78 | 2414175 | 1897-09-07 | 398.86 |
| -77 | 2414582 | 1898-10-19 | 396.54 |
| -71 | 2416982 | 1905-05-16 | 395.42 |
| -70 | 2417374 | 1906-06-12 | 395.04 |
| -69 | 2417770 | 1907-07-13 | 394.79 |
| -68 | 2418132 | 1908-07-09 | 390.84 |
| -67 | 2418541 | 1909-08-22 | 387.28 |
| -66 | 2418914 | 1910-08-30 | 390.86 |
| -65 | 2419318 | 1911-10-08 | 393 |
| -64 | 2419672 | 1912-09-26 | 390.5 |
| -63 | 2420106 | 1913-12-04 | 386.78 |
| -62 | 2420510 | 1915-01-12 | 387.57 |
| -61 | 2420894 | 1916-01-31 | 391.15 |
| -60 | 2421246 | 1917-01-17 | 391.29 |
| -59 | 2421624 | 1918-01-30 | 385.5 |
| -58 | 2422034 | 1919-03-16 | 383.57 |
| -57 | 2422432 | 1920-04-17 | 387.85 |
| -56 | 2422824 | 1921-05-14 | 391.79 |
| -55 | 2423189 | 1922-05-14 | 391.57 |
| -54 | 2423585 | 1923-06-14 | 390 |
| -53 | 2423985 | 1924-07-18 | 389.35 |
| -52 | 2424370 | 1925-08-07 | 392.5 |
| -51 | 2424770 | 1926-09-11 | 396.5 |
| -50 | 2425156 | 1927-10-02 | 396.86 |
| -49 | 2425551 | 1928-10-31 | 396.65 |
| -48 | 2425957 | 1929-12-11 | 396 |
| -47 | 2426368 | 1931-01-26 | 395.42 |
| -46 | 2426758 | 1932-02-20 | 395.57 |
| -45 | 2427150 | 1933-03-18 | 394.72 |
| -44 | 2427534 | 1934-04-06 | 392.36 |
| -43 | 2427928 | 1935-05-05 | 391.42 |
| -42 | 2428317 | 1936-05-28 | 392.28 |
| -41 | 2428717 | 1937-07-02 | 392.65 |
| -40 | 2429101 | 1938-07-21 | 392.57 |
| -39 | 2429505 | 1939-08-29 | 392.5 |
| -38 | 2429895 | 1940-09-22 | 393.28 |
| -37 | 2430286 | 1941-10-18 | 395.78 |
| -36 | 2430672 | 1942-11-08 | 394.36 |
| -35 | 2431068 | 1943-12-09 | 391.22 |
| -34 | 2431472 | 1945-01-16 | 393.15 |
| -33 | 2431887 | 1946-03-07 | 395.57 |
| -32 | 2432240 | 1947-02-23 | 395.57 |
| -31 | 2432637 | 1948-03-26 | 393.57 |
| -30 | 2433048 | 1949-05-11 | 392.07 |
| -29 | 2433448 | 1950-06-15 | 392.86 |
| -28 | 2433830 | 1951-07-02 | 393.92 |
| -27 | 2434220 | 1952-07-26 | 392.71 |
| -26 | 2434628 | 1953-09-07 | 392.79 |
| -25 | 2434999 | 1954-09-13 | 394.86 |
| -24 | 2435393 | 1955-10-12 | 395.29 |
| -23 | 2435790 | 1956-11-12 | 393.92 |
| -22 | 2436205 | 1958-01-01 | 394.71 |
| -21 | 2436601 | 1959-02-01 | 397.22 |
| -20 | 2436983 | 1960-02-18 | 399.07 |
| -19 | 2437380 | 1961-03-21 | 398.36 |
| -18 | 2437773 | 1962-04-18 | 396.07 |
| -17 | 2438180 | 1963-05-30 | 397.07 |
| -16 | 2438590 | 1964-07-13 | 398.36 |
| -15 | 2438982 | 1965-08-09 | 399 |
| -14 | 2439369 | 1966-08-31 | 398 |
| -13 | 2439774 | 1967-10-10 | 396.14 |
| -12 | 2440166 | 1968-11-05 | 396 |
| -11 | 2440573 | 1969-12-17 | 396.29 |
| -10 | 2440952 | 1970-12-31 | 396.79 |
| -9 | 2441364 | 1972-02-16 | 396.07 |
| -8 | 2441752 | 1973-03-10 | 394.92 |
| -7 | 2442147 | 1974-04-09 | 396.07 |
| -6 | 2442551 | 1975-05-18 | 396.36 |
| -5 | 2442934 | 1976-06-04 | 394.07 |
| -4 | 2443334 | 1977-07-09 | 392.43 |
| -3 | 2443736 | 1978-08-15 | 391.35 |
| -2 | 2444129 | 1979-09-12 | 388.85 |
| -1 | 2444504 | 1980-09-21 | 388.43 |
| 0 | 2444889 | 1981-10-11 | 388.79 |
| 1 | 2445288 | 1982-11-14 | 386.72 |
| 2 | 2445641 | 1983-11-02 | 385.57 |
| 3 | 2446065 | 1984-12-30 | 386.28 |
| 4 | 2446448 | 1986-01-17 | 386.43 |
| 5 | 2446831 | 1987-02-04 | 387.57 |
| 6 | 2447200 | 1988-02-08 | 386.79 |
| 7 | 2447601 | 1989-03-15 | 384.21 |
| 8 | 2447986 | 1990-04-04 | 385.5 |
| 9 | 2448369 | 1991-04-22 | 387.57 |
| 10 | 2448752 | 1992-05-09 | 388.29 |
| 11 | 2449140 | 1993-06-01 | 388.22 |
| 12 | 2449536 | 1994-07-02 | 388.5 |
| 13 | 2449921 | 1995-07-22 | 391 |
| 14 | 2450316 | 1996-08-20 | 391.29 |
| 15 | 2450706 | 1997-09-14 | 389.65 |
| 16 | 2451088 | 1998-10-01 | 390.65 |
| 17 | 2451507 | 1999-11-24 | 390.71 |
| 18 | 2451863 | 2000-11-14 | 391 |
| 19 | 2452268 | 2001-12-24 | 392.15 |
| 20 | 2452658 | 2003-01-18 | 391.22 |
| 21 | 2453049 | 2004-02-13 | 392.93 |
| 22 | 2453447 | 2005-03-17 | 395.21 |
| 23 | 2453837 | 2006-04-11 | 394.14 |
| 24 | 2454235 | 2007-05-14 | 396.22 |
| 25 | 2454636 | 2008-06-18 | 397.43 |
| 26 | 2455028 | 2009-07-15 | 398 |
| 27 | 2455416 | 2010-08-07 | 399.57 |
| 28 | 2455838 | 2011-10-03 | 399.57 |
| 29 | 2456222 | 2012-10-21 | 399.93 |
| 30 | 2456634 | 2013-12-07 | 401.86 |
| 31 | 2457032 | 2015-01-09 | 400.72 |
| 32 | 2457433 | 2016-02-14 | 398.35 |
| 33 | 2457830 | 2017-03-17 | 397.21 |
| 34 | 2458240 | 2018-05-01 | 394.79 |
| 35 | 2458624 | 2019-05-20 | 394.35 |
| 36 | 2459013 | 2020-06-12 | 395 |
| 37 | 2459404 | 2021-07-08 | 390.83 |
| 38 | 2459789 | 2022-07-28 | 386.98 |
| 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. |