| E | O (JD) | O (dat) | Period |
| -135 | 2398432 | 1854-08-01 | 348.46 |
| -134 | 2398784 | 1855-07-19 | 347.42 |
| -126 | 2401557 | 1863-02-20 | 345.49 |
| -125 | 2401900 | 1864-01-29 | 345.17 |
| -124 | 2402259 | 1865-01-22 | 344.77 |
| -123 | 2402594 | 1865-12-23 | 343.17 |
| -122 | 2402932 | 1866-11-26 | 342.12 |
| -120 | 2403612 | 1868-10-06 | 342.33 |
| -119 | 2403947 | 1869-09-06 | 342.35 |
| -118 | 2404287 | 1870-08-12 | 343.15 |
| -117 | 2404644 | 1871-08-04 | 343.96 |
| -111 | 2406704 | 1877-03-25 | 344.31 |
| -110 | 2407050 | 1878-03-06 | 345.04 |
| -108 | 2407741 | 1880-01-26 | 345.58 |
| -107 | 2408090 | 1881-01-09 | 345.62 |
| -106 | 2408421 | 1881-12-06 | 345.81 |
| -105 | 2408784 | 1882-12-04 | 346 |
| -104 | 2409132 | 1883-11-17 | 345.17 |
| -103 | 2409474 | 1884-10-24 | 344.67 |
| -102 | 2409813 | 1885-09-28 | 344.4 |
| -99 | 2410860 | 1888-08-10 | 344 |
| -92 | 2413255 | 1895-03-02 | 343.73 |
| -91 | 2413596 | 1896-02-06 | 343.87 |
| -90 | 2413941 | 1897-01-16 | 343.93 |
| -89 | 2414295 | 1898-01-05 | 343.95 |
| -88 | 2414623 | 1898-11-29 | 345.64 |
| -87 | 2414980 | 1899-11-21 | 346 |
| -86 | 2415323 | 1900-10-30 | 343.64 |
| -85 | 2415671 | 1901-10-13 | 342.57 |
| -84 | 2416019 | 1902-09-26 | 342.43 |
| -83 | 2416362 | 1903-09-04 | 342.5 |
| -82 | 2416685 | 1904-07-23 | 343.36 |
| -81 | 2417029 | 1905-07-02 | 342.36 |
| -80 | 2417368 | 1906-06-06 | 341.21 |
| -79 | 2417730 | 1907-06-03 | 342.5 |
| -78 | 2418071 | 1908-05-09 | 343.5 |
| -77 | 2418412 | 1909-04-15 | 343.43 |
| -76 | 2418746 | 1910-03-15 | 343.36 |
| -75 | 2419096 | 1911-02-28 | 341.79 |
| -74 | 2419427 | 1912-01-25 | 343 |
| -73 | 2419778 | 1913-01-10 | 345 |
| -72 | 2420127 | 1913-12-25 | 344.36 |
| -71 | 2420459 | 1914-11-22 | 344.64 |
| -70 | 2420826 | 1915-11-24 | 344.5 |
| -69 | 2421162 | 1916-10-25 | 343.29 |
| -68 | 2421501 | 1917-09-29 | 343.71 |
| -67 | 2421847 | 1918-09-10 | 343.5 |
| -66 | 2422181 | 1919-08-10 | 341.93 |
| -65 | 2422530 | 1920-07-24 | 342.57 |
| -64 | 2422868 | 1921-06-27 | 342.93 |
| -63 | 2423226 | 1922-06-20 | 341.93 |
| -62 | 2423549 | 1923-05-09 | 342.21 |
| -61 | 2423910 | 1924-05-04 | 341.71 |
| -60 | 2424239 | 1925-03-29 | 340.86 |
| -59 | 2424576 | 1926-03-01 | 341.79 |
| -58 | 2424926 | 1927-02-14 | 341.64 |
| -57 | 2425256 | 1928-01-10 | 340.71 |
| -56 | 2425610 | 1928-12-29 | 340.93 |
| -55 | 2425950 | 1929-12-04 | 340.36 |
| -54 | 2426292 | 1930-11-11 | 341.5 |
| -53 | 2426627 | 1931-10-12 | 341.14 |
| -52 | 2426961 | 1932-09-10 | 341.36 |
| -51 | 2427306 | 1933-08-21 | 344.43 |
| -50 | 2427657 | 1934-08-07 | 344.93 |
| -49 | 2427985 | 1935-07-01 | 346.64 |
| -48 | 2428354 | 1936-07-04 | 347.64 |
| -47 | 2428710 | 1937-06-25 | 346.93 |
| -46 | 2429038 | 1938-05-19 | 348.5 |
| -45 | 2429403 | 1939-05-19 | 348.5 |
| -44 | 2429731 | 1940-04-11 | 346.29 |
| -43 | 2430089 | 1941-04-04 | 347.29 |
| -42 | 2430432 | 1942-03-13 | 347.79 |
| -41 | 2430786 | 1943-03-02 | 347.93 |
| -40 | 2431126 | 1944-02-05 | 348.86 |
| -39 | 2431484 | 1945-01-28 | 348.07 |
| -38 | 2431826 | 1946-01-05 | 347.71 |
| -37 | 2432179 | 1946-12-24 | 347.21 |
| -36 | 2432525 | 1947-12-05 | 346.36 |
| -35 | 2432869 | 1948-11-13 | 344.93 |
| -34 | 2433217 | 1949-10-27 | 343.93 |
| -33 | 2433556 | 1950-10-01 | 343.57 |
| -32 | 2433903 | 1951-09-13 | 343.14 |
| -31 | 2434236 | 1952-08-11 | 342.29 |
| -30 | 2434584 | 1953-07-25 | 342.71 |
| -29 | 2434930 | 1954-07-06 | 343.71 |
| -28 | 2435268 | 1955-06-09 | 345.36 |
| -27 | 2435610 | 1956-05-16 | 346.07 |
| -26 | 2435961 | 1957-05-02 | 345.36 |
| -25 | 2436310 | 1958-04-16 | 345.93 |
| -24 | 2436664 | 1959-04-05 | 345.5 |
| -23 | 2437001 | 1960-03-07 | 344.21 |
| -22 | 2437348 | 1961-02-17 | 343.21 |
| -21 | 2437693 | 1962-01-28 | 342.36 |
| -20 | 2438022 | 1962-12-23 | 342.93 |
| -19 | 2438368 | 1963-12-04 | 342.86 |
| -18 | 2438708 | 1964-11-08 | 341.64 |
| -17 | 2439059 | 1965-10-25 | 342.5 |
| -16 | 2439407 | 1966-10-08 | 343.36 |
| -15 | 2439742 | 1967-09-08 | 343.86 |
| -14 | 2440082 | 1968-08-13 | 344 |
| -13 | 2440428 | 1969-07-25 | 342.86 |
| -12 | 2440769 | 1970-07-01 | 343.21 |
| -11 | 2441121 | 1971-06-18 | 344.71 |
| -10 | 2441462 | 1972-05-24 | 345.14 |
| -9 | 2441804 | 1973-05-01 | 346.57 |
| -8 | 2442150 | 1974-04-12 | 347.5 |
| -7 | 2442500 | 1975-03-28 | 347.14 |
| -6 | 2442842 | 1976-03-04 | 347.57 |
| -5 | 2443207 | 1977-03-04 | 347 |
| -4 | 2443548 | 1978-02-08 | 346.43 |
| -3 | 2443895 | 1979-01-21 | 346.29 |
| -2 | 2444237 | 1979-12-29 | 344.21 |
| -1 | 2444575 | 1980-12-01 | 342.71 |
| 0 | 2444925 | 1981-11-16 | 342.64 |
| 1 | 2445265 | 1982-10-22 | 341.36 |
| 2 | 2445603 | 1983-09-25 | 340.93 |
| 3 | 2445950 | 1984-09-06 | 340.93 |
| 4 | 2446290 | 1985-08-12 | 341.57 |
| 5 | 2446621 | 1986-07-09 | 342.79 |
| 6 | 2446964 | 1987-06-17 | 342.64 |
| 7 | 2447309 | 1988-05-27 | 342.21 |
| 8 | 2447663 | 1989-05-16 | 344.29 |
| 9 | 2448004 | 1990-04-22 | 346.5 |
| 10 | 2448346 | 1991-03-30 | 346.5 |
| 11 | 2448685 | 1992-03-03 | 346.43 |
| 12 | 2449046 | 1993-02-27 | 346.29 |
| 13 | 2449390 | 1994-02-06 | 346.14 |
| 14 | 2449734 | 1995-01-16 | 346.93 |
| 15 | 2450088 | 1996-01-05 | 346.21 |
| 16 | 2450427 | 1996-12-09 | 344.57 |
| 17 | 2450769 | 1997-11-16 | 344.79 |
| 18 | 2451119 | 1998-11-01 | 344.43 |
| 19 | 2451459 | 1999-10-07 | 345.36 |
| 20 | 2451801 | 2000-09-13 | 347.71 |
| 21 | 2452150 | 2001-08-28 | 347.36 |
| 22 | 2452494 | 2002-08-07 | 346.36 |
| 23 | 2452856 | 2003-08-04 | 346.29 |
| 24 | 2453208 | 2004-07-21 | 345.07 |
| 25 | 2453543 | 2005-06-21 | 344.57 |
| 26 | 2453884 | 2006-05-28 | 343.29 |
| 27 | 2454224 | 2007-05-03 | 340.93 |
| 28 | 2454558 | 2008-04-01 | 341.43 |
| 29 | 2454910 | 2009-03-19 | 342.14 |
| 30 | 2455246 | 2010-02-18 | 342.07 |
| 31 | 2455591 | 2011-01-29 | 342.71 |
| 32 | 2455940 | 2012-01-13 | 342.71 |
| 33 | 2456277 | 2012-12-15 | 343.29 |
| 34 | 2456620 | 2013-11-23 | 344.79 |
| 35 | 2456960 | 2014-10-29 | 345.5 |
| 36 | 2457306 | 2015-10-10 | 347 |
| 37 | 2457656 | 2016-09-24 | 348.86 |
| 38 | 2458008 | 2017-09-11 | 349.14 |
| 39 | 2458360 | 2018-08-29 | 350.29 |
| 40 | 2458715 | 2019-08-19 | 351.67 |
| 41 | 2459066 | 2020-08-04 | 351.49 |
| 42 | 2459402 | 2021-07-06 | 351.25 |
| 43 | 2459768 | 2022-07-07 | 351.1 |
| 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. |