| E | O (JD) | O (dat) | Period |
| -107 | 2398415 | 1854-07-15 | 429.01 |
| -106 | 2398839 | 1855-09-12 | 430 |
| -105 | 2399281 | 1856-11-27 | 430.4 |
| -104 | 2399711 | 1858-01-31 | 429.67 |
| -103 | 2400134 | 1859-03-30 | 429.65 |
| -102 | 2400569 | 1860-06-07 | 428.9 |
| -98 | 2402287 | 1865-02-19 | 427.68 |
| -97 | 2402709 | 1866-04-17 | 427.32 |
| -96 | 2403138 | 1867-06-20 | 426.59 |
| -94 | 2403989 | 1869-10-18 | 425 |
| -93 | 2404412 | 1870-12-15 | 423.94 |
| -92 | 2404834 | 1872-02-10 | 425.12 |
| -91 | 2405254 | 1873-04-05 | 425.8 |
| -90 | 2405677 | 1874-06-02 | 426.22 |
| -89 | 2406102 | 1875-08-01 | 428.72 |
| -88 | 2406547 | 1876-10-19 | 431.07 |
| -87 | 2406967 | 1877-12-13 | 431.28 |
| -86 | 2407401 | 1879-02-20 | 433.22 |
| -85 | 2407847 | 1880-05-11 | 434.43 |
| -84 | 2408276 | 1881-07-14 | 434.73 |
| -83 | 2408693 | 1882-09-04 | 436.06 |
| -82 | 2409151 | 1883-12-06 | 434.25 |
| -81 | 2409580 | 1885-02-07 | 432.32 |
| -79 | 2410455 | 1887-07-02 | 433.63 |
| -78 | 2410890 | 1888-09-09 | 432.31 |
| -77 | 2411306 | 1889-10-30 | 430.81 |
| -76 | 2411734 | 1891-01-01 | 432.07 |
| -75 | 2412173 | 1892-03-15 | 432.79 |
| -74 | 2412588 | 1893-05-04 | 434.79 |
| -73 | 2413036 | 1894-07-26 | 437.42 |
| -72 | 2413480 | 1895-10-13 | 438.5 |
| -71 | 2413924 | 1896-12-30 | 438.93 |
| -70 | 2414359 | 1898-03-10 | 438.72 |
| -69 | 2414805 | 1899-05-30 | 436.79 |
| -68 | 2415241 | 1900-08-09 | 435 |
| -67 | 2415665 | 1901-10-07 | 434.21 |
| -66 | 2416101 | 1902-12-17 | 431.93 |
| -65 | 2416530 | 1904-02-19 | 430.22 |
| -64 | 2416964 | 1905-04-28 | 431.36 |
| -63 | 2417398 | 1906-07-06 | 431.5 |
| -62 | 2417813 | 1907-08-25 | 431.5 |
| -61 | 2418256 | 1908-11-10 | 431.65 |
| -60 | 2418689 | 1910-01-17 | 430 |
| -59 | 2419118 | 1911-03-22 | 429.07 |
| -58 | 2419554 | 1912-05-31 | 429 |
| -57 | 2419983 | 1913-08-03 | 428.21 |
| -56 | 2420399 | 1914-09-23 | 428 |
| -55 | 2420819 | 1915-11-17 | 427.29 |
| -54 | 2421256 | 1917-01-27 | 426.57 |
| -53 | 2421684 | 1918-03-31 | 428 |
| -52 | 2422115 | 1919-06-05 | 429.5 |
| -51 | 2422539 | 1920-08-02 | 428.93 |
| -50 | 2422970 | 1921-10-07 | 428.29 |
| -49 | 2423404 | 1922-12-15 | 428.93 |
| -48 | 2423827 | 1924-02-11 | 429.71 |
| -47 | 2424253 | 1925-04-12 | 429.35 |
| -46 | 2424683 | 1926-06-16 | 427.86 |
| -45 | 2425121 | 1927-08-28 | 427.79 |
| -44 | 2425549 | 1928-10-29 | 428.57 |
| -43 | 2425971 | 1929-12-25 | 428.35 |
| -42 | 2426393 | 1931-02-20 | 427.92 |
| -41 | 2426827 | 1932-04-29 | 428.36 |
| -40 | 2427253 | 1933-06-29 | 428.86 |
| -39 | 2427680 | 1934-08-30 | 429.36 |
| -38 | 2428115 | 1935-11-08 | 430.5 |
| -37 | 2428552 | 1937-01-18 | 431.78 |
| -36 | 2428972 | 1938-03-14 | 432.65 |
| -35 | 2429403 | 1939-05-19 | 432.57 |
| -34 | 2429844 | 1940-08-02 | 432.07 |
| -33 | 2430281 | 1941-10-13 | 433 |
| -32 | 2430709 | 1942-12-15 | 434.57 |
| -31 | 2431142 | 1944-02-21 | 433.93 |
| -30 | 2431574 | 1945-04-28 | 433.15 |
| -29 | 2432012 | 1946-07-10 | 434.36 |
| -28 | 2432447 | 1947-09-18 | 435.42 |
| -27 | 2432875 | 1948-11-19 | 435.78 |
| -26 | 2433314 | 1950-02-01 | 435.5 |
| -25 | 2433757 | 1951-04-20 | 434.29 |
| -24 | 2434190 | 1952-06-26 | 433.79 |
| -23 | 2434627 | 1953-09-06 | 433 |
| -22 | 2435056 | 1954-11-09 | 430.92 |
| -21 | 2435483 | 1956-01-10 | 430.29 |
| -20 | 2435912 | 1957-03-14 | 430.22 |
| -19 | 2436339 | 1958-05-15 | 429 |
| -18 | 2436765 | 1959-07-15 | 428 |
| -17 | 2437206 | 1960-09-28 | 427.5 |
| -16 | 2437634 | 1961-11-30 | 427.15 |
| -15 | 2438055 | 1963-01-25 | 427.36 |
| -14 | 2438476 | 1964-03-21 | 426.22 |
| -13 | 2438904 | 1965-05-23 | 424.57 |
| -12 | 2439327 | 1966-07-20 | 424 |
| -11 | 2439760 | 1967-09-26 | 424.86 |
| -10 | 2440178 | 1968-11-17 | 425.15 |
| -9 | 2440606 | 1970-01-19 | 425 |
| -8 | 2441019 | 1971-03-08 | 426.07 |
| -7 | 2441460 | 1972-05-22 | 427.07 |
| -6 | 2441872 | 1973-07-08 | 428.29 |
| -5 | 2442309 | 1974-09-18 | 429 |
| -4 | 2442743 | 1975-11-26 | 429.5 |
| -3 | 2443174 | 1977-01-30 | 431.14 |
| -2 | 2443606 | 1978-04-07 | 432.07 |
| -1 | 2444025 | 1979-05-31 | 430.86 |
| 0 | 2444467 | 1980-08-15 | 431.15 |
| 1 | 2444901 | 1981-10-23 | 432.5 |
| 2 | 2445329 | 1982-12-25 | 433.78 |
| 3 | 2445755 | 1984-02-24 | 434.28 |
| 4 | 2446198 | 1985-05-12 | 433.86 |
| 5 | 2446637 | 1986-07-25 | 433.57 |
| 6 | 2447067 | 1987-09-28 | 434.07 |
| 7 | 2447505 | 1988-12-09 | 433.42 |
| 8 | 2447937 | 1990-02-14 | 431.28 |
| 9 | 2448363 | 1991-04-16 | 431 |
| 10 | 2448798 | 1992-06-24 | 430.86 |
| 11 | 2449223 | 1993-08-23 | 429.65 |
| 12 | 2449650 | 1994-10-24 | 429.28 |
| 13 | 2450088 | 1996-01-05 | 429.28 |
| 14 | 2450516 | 1997-03-08 | 429.36 |
| 15 | 2450941 | 1998-05-07 | 430.15 |
| 16 | 2451369 | 1999-07-09 | 430.57 |
| 17 | 2451802 | 2000-09-14 | 431.07 |
| 18 | 2452230 | 2001-11-16 | 431.92 |
| 19 | 2452665 | 2003-01-25 | 432.79 |
| 20 | 2453101 | 2004-04-05 | 433.86 |
| 21 | 2453538 | 2005-06-16 | 434.29 |
| 22 | 2453966 | 2006-08-18 | 435.21 |
| 23 | 2454403 | 2007-10-29 | 435.07 |
| 24 | 2454842 | 2009-01-10 | 434.07 |
| 25 | 2455270 | 2010-03-14 | 433.93 |
| 26 | 2455718 | 2011-06-05 | 433.65 |
| 27 | 2456139 | 2012-07-30 | 433.5 |
| 28 | 2456577 | 2013-10-11 | 433.85 |
| 29 | 2457002 | 2014-12-10 | 432.57 |
| 30 | 2457438 | 2016-02-19 | 431 |
| 31 | 2457876 | 2017-05-02 | 430.29 |
| 32 | 2458310 | 2018-07-10 | 430.51 |
| 33 | 2458734 | 2019-09-07 | 431.99 |
| 34 | 2459157 | 2020-11-03 | 429.68 |
| 35 | 2459583 | 2022-01-03 | 428.02 |
| 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. |