| E | O (JD) | O (dat) | Period |
| -102 | 2411778 | 1891-02-14 | 267.74 |
| -98 | 2412846 | 1894-01-17 | 267.74 |
| -97 | 2413112 | 1894-10-10 | 267.25 |
| -95 | 2413656 | 1896-04-06 | 266.91 |
| -94 | 2413921 | 1896-12-27 | 266.52 |
| -91 | 2414720 | 1899-03-06 | 266 |
| -90 | 2414990 | 1899-12-01 | 265.28 |
| -87 | 2415782 | 1902-02-01 | 265.28 |
| -86 | 2416045 | 1902-10-22 | 265.17 |
| -83 | 2416839 | 1904-12-24 | 265.26 |
| -82 | 2417091 | 1905-09-02 | 265.2 |
| -81 | 2417355 | 1906-05-24 | 265.63 |
| -80 | 2417645 | 1907-03-10 | 267.07 |
| -79 | 2417912 | 1907-12-02 | 268.44 |
| -78 | 2418172 | 1908-08-18 | 269.92 |
| -77 | 2418433 | 1909-05-06 | 270.91 |
| -76 | 2418711 | 1910-02-08 | 271.06 |
| -75 | 2418993 | 1910-11-17 | 270.4 |
| -74 | 2419262 | 1911-08-13 | 271.13 |
| -73 | 2419527 | 1912-05-04 | 271.3 |
| -72 | 2419803 | 1913-02-04 | 271.3 |
| -71 | 2420075 | 1913-11-03 | 270.77 |
| -69 | 2420608 | 1915-04-20 | 270.52 |
| -68 | 2420888 | 1916-01-25 | 270.59 |
| -67 | 2421150 | 1916-10-13 | 271.18 |
| -65 | 2421698 | 1918-04-14 | 271.43 |
| -64 | 2421966 | 1919-01-07 | 271.8 |
| -63 | 2422238 | 1919-10-06 | 272.84 |
| -62 | 2422506 | 1920-06-30 | 273.14 |
| -61 | 2422793 | 1921-04-13 | 273.27 |
| -60 | 2423063 | 1922-01-08 | 273.39 |
| -59 | 2423332 | 1922-10-04 | 273.35 |
| -58 | 2423618 | 1923-07-17 | 272.53 |
| -57 | 2423886 | 1924-04-10 | 271.31 |
| -56 | 2424145 | 1924-12-25 | 269.55 |
| -55 | 2424428 | 1925-10-04 | 268.25 |
| -54 | 2424696 | 1926-06-29 | 267.31 |
| -53 | 2424957 | 1927-03-17 | 266.13 |
| -52 | 2425220 | 1927-12-05 | 266.05 |
| -51 | 2425483 | 1928-08-24 | 266.11 |
| -50 | 2425744 | 1929-05-12 | 265.07 |
| -49 | 2426018 | 1930-02-10 | 264.82 |
| -48 | 2426281 | 1930-10-31 | 264.35 |
| -47 | 2426552 | 1931-07-29 | 264.25 |
| -46 | 2426820 | 1932-04-22 | 264.22 |
| -45 | 2427072 | 1932-12-30 | 263.15 |
| -44 | 2427335 | 1933-09-19 | 262.63 |
| -43 | 2427590 | 1934-06-01 | 262.2 |
| -42 | 2427864 | 1935-03-02 | 262.17 |
| -41 | 2428131 | 1935-11-24 | 262.14 |
| -40 | 2428375 | 1936-07-25 | 263.04 |
| -39 | 2428652 | 1937-04-28 | 263.66 |
| -38 | 2428907 | 1938-01-08 | 263.96 |
| -37 | 2429178 | 1938-10-06 | 264.27 |
| -36 | 2429432 | 1939-06-17 | 265 |
| -35 | 2429707 | 1940-03-18 | 266.08 |
| -34 | 2429976 | 1940-12-12 | 266.38 |
| -33 | 2430234 | 1941-08-27 | 267.31 |
| -32 | 2430508 | 1942-05-28 | 267.74 |
| -31 | 2430772 | 1943-02-16 | 268.73 |
| -30 | 2431041 | 1943-11-12 | 268.72 |
| -29 | 2431313 | 1944-08-10 | 269.45 |
| -28 | 2431582 | 1945-05-06 | 270.31 |
| -27 | 2431851 | 1946-01-30 | 270.52 |
| -26 | 2432127 | 1946-11-02 | 270.85 |
| -25 | 2432390 | 1947-07-23 | 270.68 |
| -24 | 2432668 | 1948-04-26 | 270.44 |
| -23 | 2432940 | 1949-01-23 | 270.18 |
| -22 | 2433209 | 1949-10-19 | 269.84 |
| -21 | 2433478 | 1950-07-15 | 269.81 |
| -20 | 2433744 | 1951-04-07 | 269.67 |
| -19 | 2434014 | 1952-01-02 | 269.07 |
| -18 | 2434282 | 1952-09-26 | 268.75 |
| -17 | 2434551 | 1953-06-22 | 268.7 |
| -16 | 2434829 | 1954-03-27 | 268.74 |
| -15 | 2435091 | 1954-12-14 | 268.98 |
| -14 | 2435358 | 1955-09-07 | 268.65 |
| -13 | 2435624 | 1956-05-30 | 268 |
| -12 | 2435895 | 1957-02-25 | 267.48 |
| -11 | 2436165 | 1957-11-22 | 267.49 |
| -10 | 2436438 | 1958-08-22 | 267.98 |
| -9 | 2436698 | 1959-05-09 | 267.58 |
| -8 | 2436958 | 1960-01-24 | 267.22 |
| -7 | 2437228 | 1960-10-20 | 266.83 |
| -6 | 2437506 | 1961-07-25 | 266.39 |
| -5 | 2437774 | 1962-04-19 | 266.07 |
| -4 | 2438029 | 1962-12-30 | 267.54 |
| -3 | 2438297 | 1963-09-24 | 267.54 |
| -2 | 2438565 | 1964-06-18 | 266.88 |
| -1 | 2438827 | 1965-03-07 | 266.88 |
| 0 | 2439092 | 1965-11-27 | 267.58 |
| 1 | 2439389 | 1966-09-20 | 268.05 |
| 2 | 2439635 | 1967-05-24 | 267.67 |
| 3 | 2439896 | 1968-02-09 | 267.7 |
| 4 | 2440174 | 1968-11-13 | 267.75 |
| 5 | 2440445 | 1969-08-11 | 267.53 |
| 6 | 2440706 | 1970-04-29 | 267.15 |
| 7 | 2440968 | 1971-01-16 | 268.35 |
| 8 | 2441243 | 1971-10-18 | 268.66 |
| 9 | 2441511 | 1972-07-12 | 268.66 |
| 10 | 2441780 | 1973-04-07 | 268.92 |
| 11 | 2442049 | 1974-01-01 | 269.48 |
| 12 | 2442319 | 1974-09-28 | 269.07 |
| 13 | 2442590 | 1975-06-26 | 268.47 |
| 14 | 2442861 | 1976-03-23 | 268.08 |
| 15 | 2443126 | 1976-12-13 | 267.87 |
| 16 | 2443398 | 1977-09-11 | 267.64 |
| 17 | 2443654 | 1978-05-25 | 267.53 |
| 18 | 2443925 | 1979-02-20 | 267.36 |
| 19 | 2444191 | 1979-11-13 | 266.93 |
| 20 | 2444463 | 1980-08-11 | 267.2 |
| 21 | 2444730 | 1981-05-05 | 267.12 |
| 22 | 2445000 | 1982-01-30 | 267.86 |
| 23 | 2445265 | 1982-10-22 | 267.68 |
| 24 | 2445523 | 1983-07-07 | 267.66 |
| 25 | 2445800 | 1984-04-09 | 267.93 |
| 26 | 2446062 | 1984-12-27 | 268.75 |
| 27 | 2446341 | 1985-10-02 | 269.69 |
| 28 | 2446602 | 1986-06-20 | 269.65 |
| 29 | 2446870 | 1987-03-15 | 269.89 |
| 30 | 2447146 | 1987-12-16 | 269.82 |
| 31 | 2447423 | 1988-09-18 | 269.95 |
| 32 | 2447697 | 1989-06-19 | 269.16 |
| 33 | 2447945 | 1990-02-22 | 269.23 |
| 34 | 2448222 | 1990-11-26 | 269.1 |
| 35 | 2448497 | 1991-08-28 | 268 |
| 36 | 2448764 | 1992-05-21 | 267.2 |
| 37 | 2449022 | 1993-02-03 | 266.66 |
| 38 | 2449298 | 1993-11-06 | 266.73 |
| 39 | 2449572 | 1994-08-07 | 266.1 |
| 40 | 2449823 | 1995-04-15 | 265.78 |
| 41 | 2450089 | 1996-01-06 | 266.19 |
| 42 | 2450351 | 1996-09-24 | 266.59 |
| 43 | 2450621 | 1997-06-21 | 266.68 |
| 44 | 2450893 | 1998-03-20 | 266.88 |
| 45 | 2451157 | 1998-12-09 | 267.77 |
| 46 | 2451430 | 1999-09-08 | 267.62 |
| 47 | 2451696 | 2000-05-31 | 267.42 |
| 48 | 2451966 | 2001-02-25 | 266.63 |
| 49 | 2452226 | 2001-11-12 | 265.97 |
| 50 | 2452498 | 2002-08-11 | 265.6 |
| 51 | 2452759 | 2003-04-29 | 265.4 |
| 52 | 2453026 | 2004-01-21 | 265.65 |
| 53 | 2453286 | 2004-10-07 | 266.02 |
| 54 | 2453552 | 2005-06-30 | 266.73 |
| 55 | 2453818 | 2006-03-23 | 266.69 |
| 56 | 2454090 | 2006-12-20 | 266.9 |
| 57 | 2454359 | 2007-09-15 | 266.95 |
| 58 | 2454628 | 2008-06-10 | 267.71 |
| 59 | 2454898 | 2009-03-07 | 267.75 |
| 60 | 2455156 | 2009-11-20 | 268.11 |
| 61 | 2455421 | 2010-08-12 | 267.93 |
| 62 | 2455689 | 2011-05-07 | 268.35 |
| 63 | 2455970 | 2012-02-12 | 268.73 |
| 64 | 2456231 | 2012-10-30 | 269.38 |
| 65 | 2456508 | 2013-08-03 | 269.78 |
| 66 | 2456768 | 2014-04-20 | 269.98 |
| 67 | 2457045 | 2015-01-22 | 270.11 |
| 68 | 2457312 | 2015-10-16 | 269.97 |
| 69 | 2457586 | 2016-07-16 | 270.01 |
| 70 | 2457848 | 2017-04-04 | 269.66 |
| 71 | 2458124 | 2018-01-05 | 269.64 |
| 72 | 2458398 | 2018-10-06 | 268.9 |
| 73 | 2458666 | 2019-07-01 | 268.8 |
| 74 | 2458928 | 2020-03-19 | 268.47 |
| 75 | 2459198 | 2020-12-14 | 268.4 |
| 76 | 2459466 | 2021-09-08 | 267.36 |
| 77 | 2459730 | 2022-05-30 | 266.57 |
| 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. |