| E | O (JD) | O (dat) | Period |
| -138 | 2407854 | 1880-05-18 | 225.19 |
| -120 | 2411932 | 1891-07-18 | 225.4 |
| -117 | 2412599 | 1893-05-15 | 225.41 |
| -112 | 2413732 | 1896-06-21 | 225.79 |
| -111 | 2413950 | 1897-01-25 | 225.87 |
| -110 | 2414180 | 1897-09-12 | 226.45 |
| -109 | 2414400 | 1898-04-20 | 227.13 |
| -107 | 2414860 | 1899-07-24 | 227.77 |
| -106 | 2415090 | 1900-03-11 | 227.83 |
| -104 | 2415555 | 1901-06-19 | 226.96 |
| -102 | 2416000 | 1902-09-07 | 226.77 |
| -99 | 2416693 | 1904-07-31 | 226.66 |
| -98 | 2416905 | 1905-02-28 | 226.81 |
| -96 | 2417349 | 1906-05-18 | 227.04 |
| -94 | 2417807 | 1907-08-19 | 227.04 |
| -93 | 2418036 | 1908-04-04 | 227.09 |
| -91 | 2418506 | 1909-07-18 | 227.36 |
| -90 | 2418725 | 1910-02-22 | 227.41 |
| -88 | 2419190 | 1911-06-02 | 227.2 |
| -86 | 2419631 | 1912-08-16 | 226.28 |
| -83 | 2420307 | 1914-06-23 | 226.06 |
| -80 | 2420989 | 1916-05-05 | 226.13 |
| -77 | 2421670 | 1918-03-17 | 226.38 |
| -75 | 2422113 | 1919-06-03 | 226.78 |
| -74 | 2422352 | 1920-01-28 | 226.46 |
| -73 | 2422573 | 1920-09-05 | 226.6 |
| -72 | 2422813 | 1921-05-03 | 227.35 |
| -70 | 2423248 | 1922-07-12 | 227.12 |
| -69 | 2423483 | 1923-03-04 | 226.18 |
| -68 | 2423708 | 1923-10-15 | 226 |
| -67 | 2423940 | 1924-06-03 | 226.67 |
| -66 | 2424159 | 1925-01-08 | 227.29 |
| -65 | 2424385 | 1925-08-22 | 226.79 |
| -64 | 2424617 | 1926-04-11 | 226.79 |
| -63 | 2424844 | 1926-11-24 | 226.79 |
| -62 | 2425069 | 1927-07-07 | 226.46 |
| -61 | 2425297 | 1928-02-20 | 226.05 |
| -60 | 2425526 | 1928-10-06 | 225.12 |
| -59 | 2425748 | 1929-05-16 | 223.19 |
| -57 | 2426193 | 1930-08-04 | 223.69 |
| -56 | 2426426 | 1931-03-25 | 225.5 |
| -55 | 2426637 | 1931-10-22 | 225.94 |
| -54 | 2426847 | 1932-05-19 | 226.47 |
| -53 | 2427098 | 1933-01-25 | 226.72 |
| -52 | 2427333 | 1933-09-17 | 227.78 |
| -51 | 2427556 | 1934-04-28 | 229.92 |
| -50 | 2427782 | 1934-12-10 | 229.06 |
| -49 | 2428011 | 1935-07-27 | 226.2 |
| -48 | 2428241 | 1936-03-13 | 224.93 |
| -47 | 2428462 | 1936-10-20 | 225.5 |
| -46 | 2428690 | 1937-06-05 | 225.4 |
| -45 | 2428908 | 1938-01-09 | 225 |
| -44 | 2429130 | 1938-08-19 | 224.71 |
| -43 | 2429365 | 1939-04-11 | 224.63 |
| -41 | 2429809 | 1940-06-28 | 225.59 |
| -40 | 2430043 | 1941-02-17 | 226.16 |
| -38 | 2430480 | 1942-04-30 | 225.88 |
| -36 | 2430940 | 1943-08-03 | 226.15 |
| -33 | 2431621 | 1945-06-14 | 226.84 |
| -31 | 2432071 | 1946-09-07 | 227.28 |
| -30 | 2432297 | 1947-04-21 | 227.56 |
| -28 | 2432757 | 1948-07-24 | 227.5 |
| -27 | 2432993 | 1949-03-17 | 227.77 |
| -26 | 2433212 | 1949-10-22 | 228 |
| -25 | 2433442 | 1950-06-09 | 227.14 |
| -24 | 2433669 | 1951-01-22 | 225.36 |
| -23 | 2433895 | 1951-09-05 | 224.79 |
| -22 | 2434121 | 1952-04-18 | 224.72 |
| -21 | 2434340 | 1952-11-23 | 223.71 |
| -20 | 2434565 | 1953-07-06 | 223.13 |
| -19 | 2434787 | 1954-02-13 | 223.64 |
| -18 | 2435013 | 1954-09-27 | 224.29 |
| -17 | 2435230 | 1955-05-02 | 225 |
| -16 | 2435458 | 1955-12-16 | 225.79 |
| -15 | 2435689 | 1956-08-03 | 226.43 |
| -14 | 2435912 | 1957-03-14 | 227.65 |
| -13 | 2436143 | 1957-10-31 | 228.93 |
| -12 | 2436370 | 1958-06-15 | 228.85 |
| -11 | 2436600 | 1959-01-31 | 228.99 |
| -10 | 2436830 | 1959-09-18 | 229.28 |
| -9 | 2437063 | 1960-05-08 | 228.71 |
| -8 | 2437288 | 1960-12-19 | 228.65 |
| -7 | 2437519 | 1961-08-07 | 228.5 |
| -6 | 2437746 | 1962-03-22 | 227.93 |
| -5 | 2437969 | 1962-10-31 | 228.36 |
| -4 | 2438202 | 1963-06-21 | 229.5 |
| -3 | 2438427 | 1964-02-01 | 229.86 |
| -2 | 2438657 | 1964-09-18 | 229.78 |
| -1 | 2438891 | 1965-05-10 | 229.13 |
| 0 | 2439129 | 1966-01-03 | 229.42 |
| 1 | 2439354 | 1966-08-16 | 230.2 |
| 2 | 2439578 | 1967-03-28 | 229.28 |
| 3 | 2439801 | 1967-11-06 | 228.29 |
| 4 | 2440040 | 1968-07-02 | 228 |
| 5 | 2440267 | 1969-02-14 | 228.5 |
| 6 | 2440491 | 1969-09-26 | 229.86 |
| 7 | 2440725 | 1970-05-18 | 229.43 |
| 8 | 2440950 | 1970-12-29 | 228.5 |
| 9 | 2441181 | 1971-08-17 | 229.14 |
| 10 | 2441416 | 1972-04-08 | 229.63 |
| 11 | 2441637 | 1972-11-15 | 229.85 |
| 12 | 2441869 | 1973-07-05 | 229.43 |
| 13 | 2442097 | 1974-02-18 | 228.22 |
| 14 | 2442334 | 1974-10-13 | 227.65 |
| 15 | 2442559 | 1975-05-26 | 227.29 |
| 16 | 2442784 | 1976-01-06 | 227.22 |
| 17 | 2443008 | 1976-08-17 | 226.86 |
| 18 | 2443232 | 1977-03-29 | 226.08 |
| 19 | 2443456 | 1977-11-08 | 226.5 |
| 20 | 2443691 | 1978-07-01 | 226.85 |
| 21 | 2443916 | 1979-02-11 | 227.14 |
| 22 | 2444142 | 1979-09-25 | 227.79 |
| 23 | 2444372 | 1980-05-12 | 228.08 |
| 24 | 2444596 | 1980-12-22 | 228.36 |
| 25 | 2444824 | 1981-08-07 | 229 |
| 26 | 2445053 | 1982-03-24 | 228.86 |
| 27 | 2445287 | 1982-11-13 | 229.58 |
| 28 | 2445517 | 1983-07-01 | 229.71 |
| 29 | 2445747 | 1984-02-16 | 229.13 |
| 30 | 2445971 | 1984-09-27 | 229.13 |
| 31 | 2446211 | 1985-05-25 | 227.78 |
| 32 | 2446425 | 1985-12-25 | 226.79 |
| 33 | 2446660 | 1986-08-17 | 226.93 |
| 34 | 2446888 | 1987-04-02 | 226.22 |
| 35 | 2447105 | 1987-11-05 | 226.43 |
| 36 | 2447334 | 1988-06-21 | 226.5 |
| 37 | 2447561 | 1989-02-03 | 225 |
| 38 | 2447788 | 1989-09-18 | 225.43 |
| 39 | 2448018 | 1990-05-06 | 225.63 |
| 40 | 2448238 | 1990-12-12 | 225.13 |
| 41 | 2448460 | 1991-07-22 | 225.14 |
| 42 | 2448689 | 1992-03-07 | 224.43 |
| 43 | 2448909 | 1992-10-13 | 224.5 |
| 44 | 2449138 | 1993-05-30 | 225.58 |
| 45 | 2449363 | 1994-01-10 | 225.15 |
| 46 | 2449585 | 1994-08-20 | 225 |
| 47 | 2449814 | 1995-04-06 | 226.36 |
| 48 | 2450042 | 1995-11-20 | 226.5 |
| 49 | 2450259 | 1996-06-24 | 225.99 |
| 50 | 2450489 | 1997-02-09 | 225.63 |
| 51 | 2450727 | 1997-10-05 | 225.49 |
| 52 | 2450945 | 1998-05-11 | 226.43 |
| 53 | 2451167 | 1998-12-19 | 227.5 |
| 54 | 2451391 | 1999-07-31 | 226.86 |
| 55 | 2451622 | 2000-03-18 | 226.5 |
| 56 | 2451849 | 2000-10-31 | 227.5 |
| 57 | 2452084 | 2001-06-23 | 228.43 |
| 58 | 2452308 | 2002-02-02 | 228.58 |
| 59 | 2452535 | 2002-09-17 | 227.85 |
| 60 | 2452762 | 2003-05-02 | 228.28 |
| 61 | 2452994 | 2003-12-20 | 228.35 |
| 62 | 2453219 | 2004-08-01 | 228.78 |
| 63 | 2453442 | 2005-03-12 | 228.93 |
| 64 | 2453687 | 2005-11-12 | 227.58 |
| 65 | 2453902 | 2006-06-15 | 227.15 |
| 66 | 2454144 | 2007-02-12 | 227.93 |
| 67 | 2454358 | 2007-09-14 | 227.72 |
| 68 | 2454584 | 2008-04-27 | 227.79 |
| 69 | 2454809 | 2008-12-08 | 227.28 |
| 70 | 2455043 | 2009-07-30 | 226.85 |
| 71 | 2455274 | 2010-03-18 | 228 |
| 72 | 2455504 | 2010-11-03 | 228 |
| 73 | 2455724 | 2011-06-11 | 227.58 |
| 74 | 2455954 | 2012-01-27 | 226.72 |
| 75 | 2456180 | 2012-09-09 | 226.58 |
| 76 | 2456405 | 2013-04-22 | 227.29 |
| 77 | 2456633 | 2013-12-06 | 227 |
| 78 | 2456858 | 2014-07-19 | 226.64 |
| 79 | 2457092 | 2015-03-10 | 227.13 |
| 80 | 2457318 | 2015-10-22 | 227.06 |
| 81 | 2457538 | 2016-05-29 | 226.78 |
| 82 | 2457769 | 2017-01-15 | 226.36 |
| 83 | 2457996 | 2017-08-30 | 226.15 |
| 84 | 2458221 | 2018-04-12 | 226.86 |
| 85 | 2458445 | 2018-11-22 | 227.29 |
| 86 | 2458674 | 2019-07-09 | 226.72 |
| 87 | 2458902 | 2020-02-22 | 226.29 |
| 88 | 2459130 | 2020-10-07 | 226.73 |
| 89 | 2459359 | 2021-05-24 | 227.33 |
| 90 | 2459580 | 2021-12-31 | 226.82 |
| 91 | 2459805 | 2022-08-13 | 226.59 |
| 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. |