| E | O (JD) | O (dat) | Period |
| -125 | 2403150 | 1867-07-02 | 318.12 |
| -124 | 2403464 | 1868-05-11 | 318.65 |
| -123 | 2403784 | 1869-03-27 | 318.44 |
| -122 | 2404099 | 1870-02-05 | 318.91 |
| -121 | 2404415 | 1870-12-18 | 319.03 |
| -116 | 2406012 | 1875-05-03 | 318.93 |
| -101 | 2410794 | 1888-06-05 | 318.95 |
| -100 | 2411102 | 1889-04-09 | 318.77 |
| -99 | 2411456 | 1890-03-29 | 318.71 |
| -93 | 2413358 | 1895-06-13 | 318.49 |
| -92 | 2413662 | 1896-04-12 | 318.08 |
| -91 | 2413984 | 1897-02-28 | 317.4 |
| -86 | 2415560 | 1901-06-24 | 316.92 |
| -85 | 2415886 | 1902-05-16 | 315.57 |
| -84 | 2416191 | 1903-03-17 | 315.3 |
| -83 | 2416510 | 1904-01-30 | 315.91 |
| -82 | 2416836 | 1904-12-21 | 316.37 |
| -81 | 2417139 | 1905-10-20 | 317.47 |
| -80 | 2417439 | 1906-08-16 | 317.58 |
| -79 | 2417767 | 1907-07-10 | 319.43 |
| -78 | 2418101 | 1908-06-08 | 320.28 |
| -77 | 2418426 | 1909-04-29 | 320.42 |
| -76 | 2418743 | 1910-03-12 | 320.07 |
| -75 | 2419050 | 1911-01-13 | 319.46 |
| -74 | 2419395 | 1911-12-24 | 317.76 |
| -73 | 2419709 | 1912-11-02 | 316.22 |
| -72 | 2420014 | 1913-09-03 | 315.93 |
| -71 | 2420313 | 1914-06-29 | 315.78 |
| -70 | 2420639 | 1915-05-21 | 315.19 |
| -69 | 2420955 | 1916-04-01 | 313.95 |
| -68 | 2421268 | 1917-02-08 | 314.23 |
| -67 | 2421595 | 1918-01-01 | 314.2 |
| -66 | 2421907 | 1918-11-09 | 314.16 |
| -64 | 2422529 | 1920-07-23 | 313.15 |
| -63 | 2422837 | 1921-05-27 | 312.61 |
| -62 | 2423154 | 1922-04-09 | 311.69 |
| -61 | 2423459 | 1923-02-08 | 310.94 |
| -60 | 2423779 | 1923-12-25 | 311.24 |
| -59 | 2424085 | 1924-10-26 | 311.69 |
| -58 | 2424398 | 1925-09-04 | 311.75 |
| -57 | 2424699 | 1926-07-02 | 311.7 |
| -56 | 2425016 | 1927-05-15 | 311.97 |
| -55 | 2425336 | 1928-03-30 | 312.68 |
| -54 | 2425650 | 1929-02-07 | 314.43 |
| -53 | 2425955 | 1929-12-09 | 315.86 |
| -52 | 2426268 | 1930-10-18 | 317.22 |
| -51 | 2426581 | 1931-08-27 | 317.66 |
| -50 | 2426910 | 1932-07-21 | 318.27 |
| -49 | 2427239 | 1933-06-15 | 319.67 |
| -48 | 2427557 | 1934-04-29 | 320.15 |
| -47 | 2427874 | 1935-03-12 | 320.27 |
| -46 | 2428188 | 1936-01-20 | 319.55 |
| -45 | 2428509 | 1936-12-06 | 318.54 |
| -44 | 2428841 | 1937-11-03 | 318.12 |
| -43 | 2429145 | 1938-09-03 | 317.68 |
| -42 | 2429470 | 1939-07-25 | 317.01 |
| -41 | 2429779 | 1940-05-29 | 316.47 |
| -40 | 2430099 | 1941-04-14 | 315.66 |
| -39 | 2430421 | 1942-03-02 | 315.24 |
| -38 | 2430728 | 1943-01-03 | 315.62 |
| -37 | 2431039 | 1943-11-10 | 315.15 |
| -36 | 2431358 | 1944-09-24 | 315.07 |
| -35 | 2431672 | 1945-08-04 | 314.79 |
| -34 | 2431992 | 1946-06-20 | 315.11 |
| -33 | 2432308 | 1947-05-02 | 315.34 |
| -32 | 2432618 | 1948-03-07 | 315.48 |
| -31 | 2432931 | 1949-01-14 | 315.36 |
| -30 | 2433248 | 1949-11-27 | 315.2 |
| -29 | 2433571 | 1950-10-16 | 315.34 |
| -28 | 2433877 | 1951-08-18 | 316.29 |
| -27 | 2434198 | 1952-07-04 | 316.13 |
| -26 | 2434513 | 1953-05-15 | 316.36 |
| -25 | 2434824 | 1954-03-22 | 316.49 |
| -24 | 2435147 | 1955-02-08 | 316.68 |
| -23 | 2435476 | 1956-01-03 | 317.3 |
| -22 | 2435769 | 1956-10-22 | 317.77 |
| -21 | 2436098 | 1957-09-16 | 318.65 |
| -20 | 2436416 | 1958-07-31 | 319.2 |
| -19 | 2436734 | 1959-06-14 | 318.98 |
| -18 | 2437053 | 1960-04-28 | 319.46 |
| -17 | 2437379 | 1961-03-20 | 320.42 |
| -16 | 2437703 | 1962-02-07 | 319.94 |
| -15 | 2438019 | 1962-12-20 | 319.58 |
| -14 | 2438330 | 1963-10-27 | 319.31 |
| -13 | 2438659 | 1964-09-20 | 318.81 |
| -12 | 2438977 | 1965-08-04 | 318.11 |
| -11 | 2439294 | 1966-06-17 | 317.49 |
| -10 | 2439607 | 1967-04-26 | 317.52 |
| -9 | 2439929 | 1968-03-13 | 317.57 |
| -8 | 2440245 | 1969-01-23 | 316.94 |
| -7 | 2440560 | 1969-12-04 | 317.09 |
| -6 | 2440872 | 1970-10-12 | 317.45 |
| -5 | 2441196 | 1971-09-01 | 317.9 |
| -4 | 2441516 | 1972-07-17 | 317.77 |
| -3 | 2441827 | 1973-05-24 | 317.81 |
| -2 | 2442149 | 1974-04-11 | 317.6 |
| -1 | 2442470 | 1975-02-26 | 317.39 |
| 0 | 2442790 | 1976-01-12 | 316.66 |
| 1 | 2443101 | 1976-11-18 | 316.3 |
| 2 | 2443417 | 1977-09-30 | 315.92 |
| 3 | 2443730 | 1978-08-09 | 315.46 |
| 4 | 2444049 | 1979-06-24 | 315.36 |
| 5 | 2444361 | 1980-05-01 | 315.83 |
| 6 | 2444678 | 1981-03-14 | 316.24 |
| 7 | 2444990 | 1982-01-20 | 316.64 |
| 8 | 2445310 | 1982-12-06 | 316.89 |
| 9 | 2445628 | 1983-10-20 | 316.9 |
| 10 | 2445951 | 1984-09-07 | 317.06 |
| 11 | 2446262 | 1985-07-15 | 317.15 |
| 12 | 2446583 | 1986-06-01 | 317.24 |
| 13 | 2446897 | 1987-04-11 | 317.35 |
| 14 | 2447212 | 1988-02-20 | 317.79 |
| 15 | 2447529 | 1989-01-02 | 317.59 |
| 16 | 2447849 | 1989-11-18 | 318.15 |
| 17 | 2448166 | 1990-10-01 | 318.35 |
| 18 | 2448490 | 1991-08-21 | 318.97 |
| 19 | 2448813 | 1992-07-09 | 318.77 |
| 20 | 2449118 | 1993-05-10 | 318.34 |
| 21 | 2449445 | 1994-04-02 | 317.76 |
| 22 | 2449763 | 1995-02-14 | 317.73 |
| 23 | 2450087 | 1996-01-04 | 317.82 |
| 24 | 2450393 | 1996-11-05 | 318.05 |
| 25 | 2450709 | 1997-09-17 | 318.65 |
| 26 | 2451025 | 1998-07-30 | 318.68 |
| 27 | 2451352 | 1999-06-22 | 318.82 |
| 28 | 2451675 | 2000-05-10 | 319.47 |
| 29 | 2451991 | 2001-03-22 | 319.82 |
| 30 | 2452312 | 2002-02-06 | 320.03 |
| 31 | 2452633 | 2002-12-24 | 319.66 |
| 32 | 2452946 | 2003-11-02 | 319.17 |
| 33 | 2453276 | 2004-09-27 | 318.65 |
| 34 | 2453583 | 2005-07-31 | 318.4 |
| 35 | 2453912 | 2006-06-25 | 318.56 |
| 36 | 2454224 | 2007-05-03 | 318.7 |
| 37 | 2454545 | 2008-03-19 | 318.98 |
| 38 | 2454856 | 2009-01-24 | 318.66 |
| 39 | 2455175 | 2009-12-09 | 318.99 |
| 40 | 2455505 | 2010-11-04 | 318.85 |
| 41 | 2455822 | 2011-09-17 | 318.89 |
| 42 | 2456142 | 2012-08-02 | 318.9 |
| 43 | 2456455 | 2013-06-11 | 318.98 |
| 44 | 2456775 | 2014-04-27 | 318.53 |
| 45 | 2457096 | 2015-03-14 | 317.47 |
| 46 | 2457408 | 2016-01-20 | 317.35 |
| 47 | 2457732 | 2016-12-09 | 317.61 |
| 48 | 2458050 | 2017-10-23 | 318.14 |
| 49 | 2458366 | 2018-09-04 | 318.22 |
| 50 | 2458672 | 2019-07-07 | 318.49 |
| 51 | 2458996 | 2020-05-26 | 318.95 |
| 52 | 2459322 | 2021-04-17 | 318.96 |
| 53 | 2459644 | 2022-03-05 | 319.4 |
| 54 | 2459959 | 2023-01-14 | 320.11 |
| 55 | 2460280 | 2023-12-01 | 321.04 |
| 56 | 2460600 | 2024-10-16 | 320.26 |
| 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. |