| E | O (JD) | O (dat) | Period |
| -181 | 2400808 | 1861-02-01 | 290.02 |
| -176 | 2402250 | 1865-01-13 | 290.21 |
| -171 | 2403700 | 1869-01-02 | 290.14 |
| -170 | 2404006 | 1869-11-04 | 289.95 |
| -169 | 2404297 | 1870-08-22 | 291.58 |
| -167 | 2404856 | 1872-03-03 | 292.14 |
| -166 | 2405162 | 1873-01-03 | 293.05 |
| -165 | 2405446 | 1873-10-14 | 292.73 |
| -164 | 2405730 | 1874-07-25 | 292.41 |
| -156 | 2408110 | 1881-01-29 | 292.36 |
| -150 | 2409855 | 1885-11-09 | 292.24 |
| -149 | 2410155 | 1886-09-05 | 292.05 |
| -142 | 2412171 | 1892-03-13 | 291.81 |
| -141 | 2412460 | 1892-12-27 | 291.54 |
| -140 | 2412752 | 1893-10-15 | 291.12 |
| -136 | 2413912 | 1896-12-18 | 291.88 |
| -135 | 2414218 | 1897-10-20 | 292.7 |
| -132 | 2415078 | 1900-02-27 | 294.31 |
| -130 | 2415675 | 1901-10-17 | 294.53 |
| -126 | 2416864 | 1905-01-18 | 295.13 |
| -125 | 2417163 | 1905-11-13 | 294.95 |
| -124 | 2417464 | 1906-09-10 | 293.65 |
| -121 | 2418353 | 1909-02-15 | 293.04 |
| -120 | 2418629 | 1909-11-18 | 291.86 |
| -119 | 2418944 | 1910-09-29 | 290.8 |
| -115 | 2420085 | 1913-11-13 | 290.37 |
| -112 | 2420939 | 1916-03-16 | 289.65 |
| -111 | 2421241 | 1917-01-12 | 289.09 |
| -110 | 2421531 | 1917-10-29 | 289.2 |
| -109 | 2421825 | 1918-08-19 | 288.64 |
| -108 | 2422119 | 1919-06-09 | 289.89 |
| -107 | 2422394 | 1920-03-10 | 290.61 |
| -106 | 2422687 | 1920-12-28 | 290.04 |
| -105 | 2422978 | 1921-10-15 | 289.69 |
| -104 | 2423265 | 1922-07-29 | 289.86 |
| -103 | 2423565 | 1923-05-25 | 289.73 |
| -102 | 2423858 | 1924-03-13 | 289.74 |
| -101 | 2424141 | 1924-12-21 | 288.93 |
| -100 | 2424424 | 1925-09-30 | 289 |
| -99 | 2424724 | 1926-07-27 | 289.29 |
| -98 | 2425003 | 1927-05-02 | 289.74 |
| -97 | 2425289 | 1928-02-12 | 290.95 |
| -96 | 2425575 | 1928-11-24 | 291.92 |
| -95 | 2425879 | 1929-09-24 | 292.6 |
| -94 | 2426173 | 1930-07-15 | 293.4 |
| -93 | 2426471 | 1931-05-09 | 294.01 |
| -92 | 2426769 | 1932-03-02 | 294.09 |
| -91 | 2427053 | 1932-12-11 | 294.3 |
| -90 | 2427346 | 1933-09-30 | 293.43 |
| -89 | 2427650 | 1934-07-31 | 293.14 |
| -87 | 2428226 | 1936-02-27 | 293.05 |
| -86 | 2428521 | 1936-12-18 | 293.47 |
| -85 | 2428825 | 1937-10-18 | 293.89 |
| -84 | 2429103 | 1938-07-23 | 294.5 |
| -82 | 2429693 | 1940-03-04 | 294.97 |
| -81 | 2429990 | 1940-12-26 | 294.54 |
| -80 | 2430293 | 1941-10-25 | 293.96 |
| -79 | 2430583 | 1942-08-11 | 293.22 |
| -78 | 2430893 | 1943-06-17 | 292.71 |
| -77 | 2431187 | 1944-04-06 | 291.67 |
| -75 | 2431743 | 1945-10-14 | 291.24 |
| -74 | 2432043 | 1946-08-10 | 290.81 |
| -71 | 2432919 | 1949-01-02 | 290.57 |
| -70 | 2433203 | 1949-10-13 | 290.46 |
| -69 | 2433492 | 1950-07-29 | 291.15 |
| -68 | 2433794 | 1951-05-27 | 292.33 |
| -67 | 2434083 | 1952-03-11 | 292.61 |
| -66 | 2434371 | 1952-12-24 | 293.22 |
| -65 | 2434670 | 1953-10-19 | 293.29 |
| -64 | 2434963 | 1954-08-08 | 292.76 |
| -63 | 2435256 | 1955-05-28 | 291.74 |
| -62 | 2435556 | 1956-03-23 | 291.27 |
| -61 | 2435844 | 1957-01-05 | 291.25 |
| -60 | 2436129 | 1957-10-17 | 290.82 |
| -59 | 2436417 | 1958-08-01 | 290.93 |
| -58 | 2436702 | 1959-05-13 | 291.1 |
| -57 | 2436994 | 1960-02-29 | 291.3 |
| -56 | 2437297 | 1960-12-28 | 292.47 |
| -55 | 2437585 | 1961-10-12 | 293.71 |
| -54 | 2437881 | 1962-08-04 | 293.98 |
| -53 | 2438173 | 1963-05-23 | 294.04 |
| -52 | 2438464 | 1964-03-09 | 293.66 |
| -51 | 2438767 | 1965-01-06 | 293.26 |
| -50 | 2439065 | 1965-10-31 | 293.27 |
| -49 | 2439346 | 1966-08-08 | 292.75 |
| -48 | 2439639 | 1967-05-28 | 292.49 |
| -47 | 2439932 | 1968-03-16 | 292.35 |
| -46 | 2440227 | 1969-01-05 | 291.99 |
| -45 | 2440519 | 1969-10-24 | 292.08 |
| -44 | 2440806 | 1970-08-07 | 292.64 |
| -43 | 2441101 | 1971-05-29 | 292.57 |
| -42 | 2441397 | 1972-03-20 | 292.36 |
| -41 | 2441688 | 1973-01-05 | 292.05 |
| -40 | 2441979 | 1973-10-23 | 292.04 |
| -39 | 2442274 | 1974-08-14 | 292.22 |
| -38 | 2442565 | 1975-06-01 | 292.55 |
| -37 | 2442854 | 1976-03-16 | 292.66 |
| -36 | 2443143 | 1976-12-30 | 292.85 |
| -35 | 2443438 | 1977-10-21 | 293.26 |
| -34 | 2443734 | 1978-08-13 | 293.59 |
| -33 | 2444036 | 1979-06-11 | 294.07 |
| -32 | 2444323 | 1980-03-24 | 294.76 |
| -31 | 2444614 | 1981-01-09 | 295.33 |
| -30 | 2444913 | 1981-11-04 | 295.45 |
| -29 | 2445207 | 1982-08-25 | 295.44 |
| -28 | 2445502 | 1983-06-16 | 295.21 |
| -27 | 2445803 | 1984-04-12 | 295.79 |
| -26 | 2446101 | 1985-02-04 | 295.53 |
| -25 | 2446394 | 1985-11-24 | 295.33 |
| -24 | 2446687 | 1986-09-13 | 295.13 |
| -23 | 2446977 | 1987-06-30 | 294.9 |
| -22 | 2447281 | 1988-04-29 | 294.64 |
| -21 | 2447567 | 1989-02-09 | 294.8 |
| -20 | 2447868 | 1989-12-07 | 295.03 |
| -19 | 2448160 | 1990-09-25 | 294.82 |
| -18 | 2448456 | 1991-07-18 | 294.59 |
| -17 | 2448751 | 1992-05-08 | 294.25 |
| -16 | 2449049 | 1993-03-02 | 294.1 |
| -15 | 2449342 | 1993-12-20 | 293.56 |
| -14 | 2449629 | 1994-10-03 | 293.21 |
| -13 | 2449924 | 1995-07-25 | 292.55 |
| -12 | 2450221 | 1996-05-17 | 292.04 |
| -11 | 2450509 | 1997-03-01 | 291.55 |
| -10 | 2450803 | 1997-12-20 | 291.43 |
| -9 | 2451093 | 1998-10-06 | 291.41 |
| -8 | 2451381 | 1999-07-21 | 291.4 |
| -7 | 2451673 | 2000-05-08 | 291.47 |
| -6 | 2451963 | 2001-02-22 | 291.59 |
| -5 | 2452256 | 2001-12-12 | 291.54 |
| -4 | 2452548 | 2002-09-30 | 291.47 |
| -3 | 2452845 | 2003-07-24 | 291.46 |
| -2 | 2453136 | 2004-05-10 | 291.24 |
| -1 | 2453423 | 2005-02-21 | 291.4 |
| 0 | 2453714 | 2005-12-09 | 291.42 |
| 1 | 2454002 | 2006-09-23 | 291.22 |
| 2 | 2454295 | 2007-07-13 | 291.08 |
| 3 | 2454585 | 2008-04-28 | 291.24 |
| 4 | 2454884 | 2009-02-21 | 291.55 |
| 5 | 2455175 | 2009-12-09 | 291.9 |
| 6 | 2455461 | 2010-09-21 | 292.47 |
| 7 | 2455753 | 2011-07-10 | 292.67 |
| 8 | 2456044 | 2012-04-26 | 292.75 |
| 9 | 2456338 | 2013-02-14 | 292.31 |
| 10 | 2456635 | 2013-12-08 | 292.34 |
| 11 | 2456933 | 2014-10-02 | 292.54 |
| 12 | 2457223 | 2015-07-19 | 292.45 |
| 13 | 2457513 | 2016-05-04 | 292.45 |
| 14 | 2457797 | 2017-02-12 | 291.52 |
| 15 | 2458091 | 2017-12-03 | 291.03 |
| 16 | 2458387 | 2018-09-25 | 290.96 |
| 17 | 2458680 | 2019-07-15 | 291.12 |
| 18 | 2458975 | 2020-05-05 | 291.32 |
| 19 | 2459250 | 2021-02-04 | 291.56 |
| 20 | 2459548 | 2021-11-29 | 291 |
| 21 | 2459843 | 2022-09-20 | 290.26 |
| 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. |