| E | O (JD) | O (dat) | Period |
| -127 | 2413620 | 1896-03-01 | 251.91 |
| -121 | 2415125 | 1900-04-15 | 252.23 |
| -120 | 2415380 | 1900-12-26 | 252.56 |
| -118 | 2415890 | 1902-05-20 | 252.84 |
| -117 | 2416130 | 1903-01-15 | 252.74 |
| -115 | 2416645 | 1904-06-13 | 252.87 |
| -114 | 2416900 | 1905-02-23 | 253.11 |
| -111 | 2417660 | 1907-03-25 | 252.96 |
| -108 | 2418421 | 1909-04-24 | 252.95 |
| -107 | 2418665 | 1909-12-24 | 253.3 |
| -105 | 2419179 | 1911-05-22 | 252.93 |
| -104 | 2419425 | 1912-01-23 | 252.84 |
| -102 | 2419930 | 1913-06-11 | 252.87 |
| -101 | 2420186 | 1914-02-22 | 252.4 |
| -100 | 2420450 | 1914-11-13 | 252.41 |
| -99 | 2420690 | 1915-07-11 | 251.64 |
| -98 | 2420945 | 1916-03-22 | 251.69 |
| -97 | 2421200 | 1916-12-02 | 251.54 |
| -95 | 2421690 | 1918-04-06 | 251.44 |
| -94 | 2421950 | 1918-12-22 | 251.94 |
| -92 | 2422445 | 1920-04-30 | 253.05 |
| -91 | 2422705 | 1921-01-15 | 253.18 |
| -89 | 2423210 | 1922-06-04 | 253.35 |
| -88 | 2423462 | 1923-02-11 | 253.79 |
| -85 | 2424230 | 1925-03-20 | 253.36 |
| -82 | 2425000 | 1927-04-29 | 253.18 |
| -81 | 2425240 | 1927-12-25 | 252.8 |
| -79 | 2425745 | 1929-05-13 | 252.39 |
| -78 | 2426005 | 1930-01-28 | 251.85 |
| -75 | 2426748 | 1932-02-10 | 250.93 |
| -74 | 2427000 | 1932-10-19 | 250.34 |
| -73 | 2427255 | 1933-07-01 | 250.62 |
| -72 | 2427500 | 1934-03-03 | 250.61 |
| -71 | 2427750 | 1934-11-08 | 251.12 |
| -69 | 2428250 | 1936-03-22 | 252.14 |
| -68 | 2428500 | 1936-11-27 | 252.1 |
| -66 | 2429007 | 1938-04-18 | 252.66 |
| -65 | 2429262 | 1938-12-29 | 253.55 |
| -64 | 2429526 | 1939-09-19 | 253.4 |
| -63 | 2429780 | 1940-05-30 | 254.13 |
| -62 | 2430017 | 1941-01-22 | 253.55 |
| -61 | 2430285 | 1941-10-17 | 252.85 |
| -60 | 2430543 | 1942-07-02 | 253.41 |
| -59 | 2430774 | 1943-02-18 | 252.71 |
| -58 | 2431050 | 1943-11-21 | 252.75 |
| -56 | 2431537 | 1945-03-22 | 252.47 |
| -55 | 2431790 | 1945-11-30 | 252.09 |
| -54 | 2432070 | 1946-09-06 | 252.46 |
| -53 | 2432296 | 1947-04-20 | 252.23 |
| -52 | 2432554 | 1948-01-03 | 251.36 |
| -51 | 2432796 | 1948-09-01 | 251.86 |
| -50 | 2433062 | 1949-05-25 | 251.67 |
| -49 | 2433318 | 1950-02-05 | 251.89 |
| -43 | 2434816 | 1954-03-14 | 252.24 |
| -33 | 2437327 | 1961-01-27 | 252.32 |
| -30 | 2438103 | 1963-03-14 | 252.52 |
| -29 | 2438340 | 1963-11-06 | 252.43 |
| -27 | 2438870 | 1965-04-19 | 252.54 |
| -26 | 2439118 | 1965-12-23 | 252.97 |
| -21 | 2440380 | 1969-06-07 | 253.1 |
| -20 | 2440640 | 1970-02-22 | 252.71 |
| -18 | 2441133 | 1971-06-30 | 252.6 |
| -17 | 2441384 | 1972-03-07 | 252.03 |
| -15 | 2441890 | 1973-07-26 | 252.05 |
| -14 | 2442143 | 1974-04-05 | 251.59 |
| -13 | 2442400 | 1974-12-18 | 251.33 |
| -12 | 2442646 | 1975-08-21 | 251.8 |
| -11 | 2442905 | 1976-05-06 | 252.16 |
| -10 | 2443150 | 1977-01-06 | 252.24 |
| -8 | 2443647 | 1978-05-18 | 251.93 |
| -7 | 2443900 | 1979-01-26 | 251.96 |
| -6 | 2444160 | 1979-10-13 | 252.1 |
| -5 | 2444421 | 1980-06-30 | 252.12 |
| -4 | 2444669 | 1981-03-05 | 252.42 |
| -3 | 2444910 | 1981-11-01 | 252.18 |
| -2 | 2445169 | 1982-07-18 | 251.75 |
| -1 | 2445418 | 1983-03-24 | 251.16 |
| 0 | 2445673 | 1983-12-04 | 251.08 |
| 1 | 2445923 | 1984-08-10 | 251.2 |
| 2 | 2446170 | 1985-04-14 | 250.95 |
| 3 | 2446426 | 1985-12-26 | 250.4 |
| 4 | 2446675 | 1986-09-01 | 250.58 |
| 5 | 2446929 | 1987-05-13 | 250.78 |
| 6 | 2447174 | 1988-01-13 | 250.96 |
| 7 | 2447419 | 1988-09-14 | 251.38 |
| 8 | 2447673 | 1989-05-26 | 251.08 |
| 9 | 2447931 | 1990-02-08 | 251.06 |
| 10 | 2448185 | 1990-10-20 | 251.4 |
| 11 | 2448432 | 1991-06-24 | 251.99 |
| 12 | 2448689 | 1992-03-07 | 251.94 |
| 13 | 2448930 | 1992-11-03 | 252.05 |
| 14 | 2449181 | 1993-07-12 | 251.72 |
| 15 | 2449441 | 1994-03-29 | 251.86 |
| 16 | 2449695 | 1994-12-08 | 252.01 |
| 17 | 2449940 | 1995-08-10 | 251.52 |
| 18 | 2450203 | 1996-04-29 | 250.86 |
| 19 | 2450445 | 1996-12-27 | 250.59 |
| 21 | 2450952 | 1998-05-18 | 250.14 |
| 22 | 2451202 | 1999-01-23 | 249.71 |
| 24 | 2451696 | 2000-05-31 | 249.81 |
| 25 | 2451934 | 2001-01-24 | 249.65 |
| 26 | 2452200 | 2001-10-17 | 249.81 |
| 27 | 2452447 | 2002-06-21 | 249.6 |
| 28 | 2452689 | 2003-02-18 | 250.04 |
| 29 | 2452950 | 2003-11-06 | 250.71 |
| 30 | 2453200 | 2004-07-13 | 250.94 |
| 31 | 2453444 | 2005-03-14 | 251.17 |
| 34 | 2454193 | 2007-04-02 | 251.69 |
| 35 | 2454450 | 2007-12-15 | 251.73 |
| 37 | 2454956 | 2009-05-04 | 251.46 |
| 38 | 2455205 | 2010-01-08 | 251.68 |
| 39 | 2455470 | 2010-09-30 | 251.99 |
| 40 | 2455719 | 2011-06-06 | 252.01 |
| 41 | 2455959 | 2012-02-01 | 251.98 |
| 42 | 2456210 | 2012-10-09 | 251.54 |
| 43 | 2456465 | 2013-06-21 | 251.67 |
| 44 | 2456718 | 2014-03-01 | 251.54 |
| 45 | 2456970 | 2014-11-08 | 251.99 |
| 46 | 2457230 | 2015-07-26 | 252.35 |
| 47 | 2457469 | 2016-03-21 | 252.46 |
| 48 | 2457730 | 2016-12-07 | 251.98 |
| 49 | 2457980 | 2017-08-14 | 251.86 |
| 50 | 2458230 | 2018-04-21 | 252.11 |
| 51 | 2458481 | 2018-12-28 | 252.05 |
| 53 | 2458992 | 2020-05-22 | 252.48 |
| 54 | 2459234 | 2021-01-19 | 252.15 |
| 55 | 2459490 | 2021-10-02 | 252.45 |
| 56 | 2459750 | 2022-06-19 | 252.76 |
| 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. |