| E | O (JD) | O (dat) | Period |
| -144 | 2398539 | 1854-11-16 | 303.36 |
| -143 | 2398837 | 1855-09-10 | 303.42 |
| -96 | 2413100 | 1894-09-28 | 303.44 |
| -95 | 2413405 | 1895-07-30 | 303.45 |
| -94 | 2413701 | 1896-05-21 | 303.45 |
| -93 | 2414005 | 1897-03-21 | 303.45 |
| -90 | 2414930 | 1899-10-02 | 303.54 |
| -89 | 2415230 | 1900-07-29 | 303.81 |
| -86 | 2416138 | 1903-01-23 | 303.91 |
| -85 | 2416438 | 1903-11-19 | 304.2 |
| -84 | 2416743 | 1904-09-19 | 304.12 |
| -83 | 2417054 | 1905-07-27 | 303.91 |
| -82 | 2417347 | 1906-05-16 | 304.45 |
| -81 | 2417659 | 1907-03-24 | 305.13 |
| -80 | 2417968 | 1908-01-27 | 306.58 |
| -79 | 2418270 | 1908-11-24 | 307 |
| -78 | 2418574 | 1909-09-24 | 307.02 |
| -77 | 2418880 | 1910-07-27 | 307.37 |
| -76 | 2419188 | 1911-05-31 | 307 |
| -73 | 2420126 | 1913-12-24 | 307.03 |
| -72 | 2420425 | 1914-10-19 | 307.39 |
| -71 | 2420725 | 1915-08-15 | 306.99 |
| -70 | 2421035 | 1916-06-20 | 306.6 |
| -69 | 2421335 | 1917-04-16 | 305.34 |
| -68 | 2421647 | 1918-02-22 | 304.08 |
| -67 | 2421961 | 1919-01-02 | 303.78 |
| -66 | 2422251 | 1919-10-19 | 303.77 |
| -65 | 2422562 | 1920-08-25 | 303.2 |
| -64 | 2422850 | 1921-06-09 | 302.95 |
| -63 | 2423162 | 1922-04-17 | 302.68 |
| -62 | 2423458 | 1923-02-07 | 302.93 |
| -61 | 2423772 | 1923-12-18 | 303.58 |
| -60 | 2424069 | 1924-10-10 | 303.74 |
| -59 | 2424373 | 1925-08-10 | 304.35 |
| -58 | 2424680 | 1926-06-13 | 304.07 |
| -57 | 2424986 | 1927-04-15 | 304.01 |
| -56 | 2425286 | 1928-02-09 | 303.25 |
| -55 | 2425592 | 1928-12-11 | 304.1 |
| -54 | 2425897 | 1929-10-12 | 303.87 |
| -53 | 2426199 | 1930-08-10 | 303.15 |
| -52 | 2426499 | 1931-06-06 | 302.53 |
| -51 | 2426796 | 1932-03-29 | 302.18 |
| -50 | 2427122 | 1933-02-18 | 301.49 |
| -49 | 2427412 | 1933-12-05 | 301.72 |
| -48 | 2427705 | 1934-09-24 | 301.39 |
| -47 | 2428005 | 1935-07-21 | 301.64 |
| -46 | 2428309 | 1936-05-20 | 301.56 |
| -45 | 2428606 | 1937-03-13 | 301.66 |
| -44 | 2428923 | 1938-01-24 | 302.65 |
| -43 | 2429211 | 1938-11-08 | 302.89 |
| -42 | 2429524 | 1939-09-17 | 303.15 |
| -41 | 2429822 | 1940-07-11 | 304.52 |
| -40 | 2430134 | 1941-05-19 | 305.24 |
| -39 | 2430430 | 1942-03-11 | 305.25 |
| -38 | 2430727 | 1943-01-02 | 305.94 |
| -37 | 2431039 | 1943-11-10 | 305.73 |
| -36 | 2431370 | 1944-10-06 | 306.05 |
| -35 | 2431664 | 1945-07-27 | 306.42 |
| -34 | 2431963 | 1946-05-22 | 306.8 |
| -33 | 2432269 | 1947-03-24 | 306.31 |
| -31 | 2432879 | 1948-11-23 | 305.7 |
| -30 | 2433188 | 1949-09-28 | 304.85 |
| -29 | 2433503 | 1950-08-09 | 305.09 |
| -28 | 2433805 | 1951-06-07 | 305.25 |
| -27 | 2434100 | 1952-03-28 | 304.96 |
| -26 | 2434413 | 1953-02-04 | 304.09 |
| -25 | 2434709 | 1953-11-27 | 303.44 |
| -24 | 2435012 | 1954-09-26 | 302.65 |
| -23 | 2435325 | 1955-08-05 | 302.42 |
| -22 | 2435627 | 1956-06-02 | 302.19 |
| -21 | 2435920 | 1957-03-22 | 301.5 |
| -20 | 2436227 | 1958-01-23 | 301.15 |
| -19 | 2436523 | 1958-11-15 | 301.21 |
| -18 | 2436824 | 1959-09-12 | 301.3 |
| -17 | 2437126 | 1960-07-10 | 302.42 |
| -16 | 2437426 | 1961-05-06 | 302.69 |
| -15 | 2437723 | 1962-02-27 | 302.87 |
| -14 | 2438039 | 1963-01-09 | 303.63 |
| -13 | 2438342 | 1963-11-08 | 303.69 |
| -12 | 2438655 | 1964-09-16 | 303.79 |
| -11 | 2438940 | 1965-06-28 | 304.3 |
| -10 | 2439249 | 1966-05-03 | 304.45 |
| -9 | 2439559 | 1967-03-09 | 304.07 |
| -8 | 2439855 | 1967-12-30 | 304.42 |
| -7 | 2440161 | 1968-10-31 | 304.49 |
| -6 | 2440475 | 1969-09-10 | 305.68 |
| -5 | 2440777 | 1970-07-09 | 306.15 |
| -4 | 2441079 | 1971-05-07 | 306.45 |
| -3 | 2441387 | 1972-03-10 | 307.57 |
| -2 | 2441687 | 1973-01-04 | 308.22 |
| -1 | 2442005 | 1973-11-18 | 308.3 |
| 0 | 2442317 | 1974-09-26 | 308.5 |
| 1 | 2442618 | 1975-07-24 | 308.54 |
| 2 | 2442938 | 1976-06-08 | 308.48 |
| 3 | 2443248 | 1977-04-14 | 308.25 |
| 4 | 2443547 | 1978-02-07 | 307.08 |
| 5 | 2443850 | 1978-12-07 | 305.93 |
| 6 | 2444159 | 1979-10-12 | 306.03 |
| 7 | 2444471 | 1980-08-19 | 305.34 |
| 8 | 2444776 | 1981-06-20 | 305.88 |
| 9 | 2445073 | 1982-04-13 | 306.14 |
| 10 | 2445369 | 1983-02-03 | 305.9 |
| 11 | 2445695 | 1983-12-26 | 305.23 |
| 12 | 2445992 | 1984-10-18 | 304.71 |
| 13 | 2446310 | 1985-09-01 | 304.74 |
| 14 | 2446606 | 1986-06-24 | 304.87 |
| 15 | 2446908 | 1987-04-22 | 304.17 |
| 16 | 2447207 | 1988-02-15 | 303.69 |
| 17 | 2447511 | 1988-12-15 | 303.49 |
| 18 | 2447819 | 1989-10-19 | 303.55 |
| 19 | 2448125 | 1990-08-21 | 304.08 |
| 20 | 2448420 | 1991-06-12 | 304.23 |
| 21 | 2448739 | 1992-04-26 | 304.62 |
| 22 | 2449028 | 1993-02-09 | 304.83 |
| 23 | 2449344 | 1993-12-22 | 304.55 |
| 24 | 2449643 | 1994-10-17 | 304.91 |
| 25 | 2449946 | 1995-08-16 | 305.32 |
| 26 | 2450257 | 1996-06-22 | 305.37 |
| 27 | 2450564 | 1997-04-25 | 305.94 |
| 28 | 2450860 | 1998-02-15 | 305.48 |
| 29 | 2451174 | 1998-12-26 | 305.92 |
| 30 | 2451479 | 1999-10-27 | 306.25 |
| 31 | 2451788 | 2000-08-31 | 306.69 |
| 32 | 2452090 | 2001-06-29 | 307.12 |
| 33 | 2452391 | 2002-04-26 | 307.48 |
| 34 | 2452704 | 2003-03-05 | 307.2 |
| 35 | 2453015 | 2004-01-10 | 307.22 |
| 36 | 2453328 | 2004-11-18 | 306.53 |
| 37 | 2453631 | 2005-09-17 | 306.64 |
| 38 | 2453936 | 2006-07-19 | 306.62 |
| 39 | 2454241 | 2007-05-20 | 305.9 |
| 40 | 2454547 | 2008-03-21 | 305.84 |
| 41 | 2454840 | 2009-01-08 | 306.49 |
| 42 | 2455159 | 2009-11-23 | 306.91 |
| 43 | 2455468 | 2010-09-28 | 306.93 |
| 44 | 2455767 | 2011-07-24 | 306.49 |
| 45 | 2456081 | 2012-06-02 | 306.49 |
| 46 | 2456399 | 2013-04-16 | 306.62 |
| 47 | 2456695 | 2014-02-06 | 305.64 |
| 48 | 2456996 | 2014-12-04 | 305.15 |
| 49 | 2457293 | 2015-09-27 | 305.06 |
| 50 | 2457608 | 2016-08-07 | 304.38 |
| 51 | 2457917 | 2017-06-12 | 304.41 |
| 52 | 2458215 | 2018-04-06 | 305.07 |
| 53 | 2458518 | 2019-02-03 | 305.34 |
| 54 | 2458828 | 2019-12-10 | 305.47 |
| 55 | 2459128 | 2020-10-05 | 304.81 |
| 56 | 2459439 | 2021-08-12 | 304.86 |
| 57 | 2459743 | 2022-06-12 | 305.8 |
| 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. |