| E | O (JD) | O (dat) | Period |
| -123 | 2407812 | 1880-04-06 | 255.3 |
| -120 | 2408577 | 1882-05-11 | 255.23 |
| -110 | 2411130 | 1889-05-07 | 255.17 |
| -100 | 2413688 | 1896-05-08 | 255.2 |
| -99 | 2413940 | 1897-01-15 | 255.22 |
| -97 | 2414445 | 1898-06-04 | 255.24 |
| -96 | 2414700 | 1899-02-14 | 255.23 |
| -94 | 2415209 | 1900-07-08 | 254.97 |
| -91 | 2415980 | 1902-08-18 | 254.61 |
| -90 | 2416236 | 1903-05-01 | 254.46 |
| -87 | 2417002 | 1905-06-05 | 254.46 |
| -86 | 2417255 | 1906-02-13 | 254.39 |
| -84 | 2417753 | 1907-06-26 | 253.78 |
| -83 | 2418008 | 1908-03-07 | 253.39 |
| -82 | 2418258 | 1908-11-12 | 254.5 |
| -81 | 2418520 | 1909-08-01 | 255.62 |
| -80 | 2418778 | 1910-04-16 | 256.26 |
| -78 | 2419269 | 1911-08-20 | 257.12 |
| -77 | 2419534 | 1912-05-11 | 257.42 |
| -74 | 2420325 | 1914-07-11 | 257.64 |
| -73 | 2420583 | 1915-03-26 | 257.64 |
| -71 | 2421085 | 1916-08-09 | 257.72 |
| -70 | 2421350 | 1917-05-01 | 258.11 |
| -69 | 2421606 | 1918-01-12 | 256.82 |
| -68 | 2421862 | 1918-09-25 | 255.24 |
| -67 | 2422118 | 1919-06-08 | 254.48 |
| -66 | 2422371 | 1920-02-16 | 254.65 |
| -65 | 2422633 | 1920-11-04 | 254.67 |
| -64 | 2422874 | 1921-07-03 | 254.66 |
| -63 | 2423127 | 1922-03-13 | 254.66 |
| -62 | 2423375 | 1922-11-16 | 255.15 |
| -61 | 2423647 | 1923-08-15 | 255.09 |
| -60 | 2423908 | 1924-05-02 | 255.1 |
| -57 | 2424663 | 1926-05-27 | 255.23 |
| -56 | 2424917 | 1927-02-05 | 255.21 |
| -54 | 2425437 | 1928-07-09 | 255.11 |
| -53 | 2425680 | 1929-03-09 | 254.61 |
| -52 | 2425937 | 1929-11-21 | 254.7 |
| -51 | 2426187 | 1930-07-29 | 254.72 |
| -50 | 2426450 | 1931-04-18 | 254.04 |
| -49 | 2426706 | 1931-12-30 | 254.14 |
| -48 | 2426961 | 1932-09-10 | 254.8 |
| -47 | 2427216 | 1933-05-23 | 255.01 |
| -46 | 2427458 | 1934-01-20 | 255.14 |
| -45 | 2427707 | 1934-09-26 | 255.34 |
| -44 | 2427980 | 1935-06-26 | 255.63 |
| -43 | 2428234 | 1936-03-06 | 255.9 |
| -41 | 2428746 | 1937-07-31 | 256.77 |
| -40 | 2428999 | 1938-04-10 | 257.27 |
| -38 | 2429516 | 1939-09-09 | 257.39 |
| -37 | 2429769 | 1940-05-19 | 256.82 |
| -36 | 2430024 | 1941-01-29 | 256.76 |
| -35 | 2430297 | 1941-10-29 | 256.88 |
| -34 | 2430545 | 1942-07-04 | 256.87 |
| -33 | 2430806 | 1943-03-22 | 256.33 |
| -31 | 2431312 | 1944-08-09 | 255.79 |
| -30 | 2431565 | 1945-04-19 | 255.12 |
| -29 | 2431828 | 1946-01-07 | 254.26 |
| -28 | 2432083 | 1946-09-19 | 254.38 |
| -27 | 2432331 | 1947-05-25 | 254.26 |
| -26 | 2432582 | 1948-01-31 | 254.43 |
| -25 | 2432837 | 1948-10-12 | 254.28 |
| -24 | 2433090 | 1949-06-22 | 254.08 |
| -23 | 2433349 | 1950-03-08 | 254.31 |
| -22 | 2433606 | 1950-11-20 | 254.84 |
| -21 | 2433860 | 1951-08-01 | 255.11 |
| -20 | 2434111 | 1952-04-08 | 255.4 |
| -19 | 2434366 | 1952-12-19 | 255.8 |
| -18 | 2434620 | 1953-08-30 | 255.94 |
| -17 | 2434879 | 1954-05-16 | 255.95 |
| -16 | 2435135 | 1955-01-27 | 255.85 |
| -15 | 2435395 | 1955-10-14 | 255.75 |
| -14 | 2435654 | 1956-06-29 | 255.17 |
| -13 | 2435908 | 1957-03-10 | 254.61 |
| -12 | 2436158 | 1957-11-15 | 254.01 |
| -11 | 2436409 | 1958-07-24 | 253.68 |
| -10 | 2436665 | 1959-04-06 | 253.76 |
| -9 | 2436914 | 1959-12-11 | 253.78 |
| -8 | 2437169 | 1960-08-22 | 253.88 |
| -7 | 2437424 | 1961-05-04 | 254.37 |
| -6 | 2437680 | 1962-01-15 | 254.97 |
| -5 | 2437942 | 1962-10-04 | 255.55 |
| -4 | 2438190 | 1963-06-09 | 256.06 |
| -3 | 2438440 | 1964-02-14 | 256.16 |
| -2 | 2438701 | 1964-11-01 | 255.99 |
| -1 | 2438962 | 1965-07-20 | 256.31 |
| 0 | 2439221 | 1966-04-05 | 256.43 |
| 1 | 2439475 | 1966-12-15 | 256.43 |
| 2 | 2439729 | 1967-08-26 | 255.95 |
| 3 | 2439980 | 1968-05-03 | 255.62 |
| 4 | 2440247 | 1969-01-25 | 255.38 |
| 5 | 2440500 | 1969-10-05 | 255.54 |
| 6 | 2440747 | 1970-06-09 | 255.85 |
| 7 | 2441000 | 1971-02-17 | 256.05 |
| 8 | 2441265 | 1971-11-09 | 255.83 |
| 9 | 2441519 | 1972-07-20 | 255.54 |
| 10 | 2441778 | 1973-04-05 | 255.7 |
| 11 | 2442034 | 1973-12-17 | 255.68 |
| 12 | 2442289 | 1974-08-29 | 255.56 |
| 13 | 2442538 | 1975-05-05 | 255.22 |
| 14 | 2442797 | 1976-01-19 | 255.1 |
| 15 | 2443050 | 1976-09-28 | 255.15 |
| 16 | 2443303 | 1977-06-08 | 255.62 |
| 17 | 2443565 | 1978-02-25 | 256.02 |
| 18 | 2443820 | 1978-11-07 | 256.45 |
| 19 | 2444071 | 1979-07-16 | 256.46 |
| 20 | 2444331 | 1980-04-01 | 256.65 |
| 21 | 2444592 | 1980-12-18 | 256.85 |
| 22 | 2444846 | 1981-08-29 | 256.47 |
| 23 | 2445103 | 1982-05-13 | 256.84 |
| 24 | 2445358 | 1983-01-23 | 257.15 |
| 25 | 2445615 | 1983-10-07 | 256.73 |
| 26 | 2445875 | 1984-06-23 | 256.48 |
| 27 | 2446124 | 1985-02-27 | 256.55 |
| 28 | 2446390 | 1985-11-20 | 256.34 |
| 29 | 2446648 | 1986-08-05 | 255.98 |
| 30 | 2446896 | 1987-04-10 | 256.15 |
| 31 | 2447153 | 1987-12-23 | 256 |
| 32 | 2447411 | 1988-09-06 | 255.86 |
| 33 | 2447664 | 1989-05-17 | 255.39 |
| 34 | 2447916 | 1990-01-24 | 255.45 |
| 35 | 2448184 | 1990-10-19 | 255.82 |
| 36 | 2448434 | 1991-06-26 | 256.18 |
| 37 | 2448686 | 1992-03-04 | 256.97 |
| 38 | 2448942 | 1992-11-15 | 256.89 |
| 39 | 2449198 | 1993-07-29 | 256.48 |
| 40 | 2449457 | 1994-04-14 | 255.93 |
| 41 | 2449721 | 1995-01-03 | 256.28 |
| 42 | 2449987 | 1995-09-26 | 256.53 |
| 43 | 2450225 | 1996-05-21 | 256.5 |
| 44 | 2450477 | 1997-01-28 | 255.75 |
| 45 | 2450734 | 1997-10-12 | 255.12 |
| 46 | 2450996 | 1998-07-01 | 254.81 |
| 47 | 2451256 | 1999-03-18 | 255.32 |
| 48 | 2451512 | 1999-11-29 | 255.71 |
| 49 | 2451754 | 2000-07-28 | 255.36 |
| 50 | 2452012 | 2001-04-12 | 255.11 |
| 51 | 2452271 | 2001-12-27 | 255 |
| 52 | 2452535 | 2002-09-17 | 255.03 |
| 53 | 2452776 | 2003-05-16 | 255.85 |
| 54 | 2453032 | 2004-01-27 | 256.56 |
| 55 | 2453293 | 2004-10-14 | 256.15 |
| 56 | 2453551 | 2005-06-29 | 255.97 |
| 57 | 2453803 | 2006-03-08 | 256.18 |
| 58 | 2454070 | 2006-11-30 | 256.71 |
| 59 | 2454323 | 2007-08-10 | 256.12 |
| 60 | 2454570 | 2008-04-13 | 255.48 |
| 61 | 2454829 | 2008-12-28 | 255.17 |
| 62 | 2455090 | 2009-09-15 | 255.06 |
| 63 | 2455344 | 2010-05-27 | 254.65 |
| 64 | 2455592 | 2011-01-30 | 255.25 |
| 65 | 2455847 | 2011-10-12 | 255.85 |
| 66 | 2456104 | 2012-06-25 | 255.99 |
| 67 | 2456361 | 2013-03-09 | 256.19 |
| 68 | 2456614 | 2013-11-17 | 256.78 |
| 69 | 2456878 | 2014-08-08 | 257.35 |
| 70 | 2457136 | 2015-04-23 | 257.68 |
| 71 | 2457392 | 2016-01-04 | 257.62 |
| 72 | 2457647 | 2016-09-15 | 257.94 |
| 73 | 2457906 | 2017-06-01 | 257.69 |
| 74 | 2458164 | 2018-02-14 | 257.35 |
| 75 | 2458425 | 2018-11-02 | 257.07 |
| 76 | 2458677 | 2019-07-12 | 257.09 |
| 77 | 2458943 | 2020-04-03 | 257.03 |
| 78 | 2459190 | 2020-12-06 | 256.7 |
| 79 | 2459450 | 2021-08-23 | 256.32 |
| 80 | 2459702 | 2022-05-02 | 255.74 |
| 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. |