| E | O (JD) | O (dat) | Period |
| -123 | 2398623 | 1855-02-08 | 376.83 |
| -122 | 2399026 | 1856-03-17 | 376.57 |
| -121 | 2399390 | 1857-03-16 | 375.23 |
| -120 | 2399773 | 1858-04-03 | 374.65 |
| -119 | 2400148 | 1859-04-13 | 374.35 |
| -118 | 2400511 | 1860-04-10 | 374.54 |
| -117 | 2400895 | 1861-04-29 | 373.88 |
| -113 | 2402387 | 1865-05-30 | 374.32 |
| -112 | 2402757 | 1866-06-04 | 375.58 |
| -111 | 2403130 | 1867-06-12 | 377.22 |
| -110 | 2403515 | 1868-07-01 | 377.55 |
| -109 | 2403884 | 1869-07-05 | 377.7 |
| -107 | 2404641 | 1871-08-01 | 378.07 |
| -104 | 2405800 | 1874-10-03 | 378 |
| -89 | 2411456 | 1890-03-29 | 377.93 |
| -87 | 2412203 | 1892-04-14 | 377.87 |
| -86 | 2412583 | 1893-04-29 | 377.89 |
| -85 | 2412972 | 1894-05-23 | 377.7 |
| -84 | 2413330 | 1895-05-16 | 377.16 |
| -83 | 2413711 | 1896-05-31 | 378.76 |
| -82 | 2414097 | 1897-06-21 | 379.39 |
| -81 | 2414475 | 1898-07-04 | 379.02 |
| -80 | 2414855 | 1899-07-19 | 378.63 |
| -79 | 2415229 | 1900-07-28 | 378.22 |
| -74 | 2417138 | 1905-10-19 | 377.68 |
| -73 | 2417514 | 1906-10-30 | 376.48 |
| -72 | 2417878 | 1907-10-29 | 375.63 |
| -71 | 2418250 | 1908-11-04 | 375.49 |
| -70 | 2418612 | 1909-11-01 | 374.8 |
| -69 | 2419000 | 1910-11-24 | 373.15 |
| -68 | 2419349 | 1911-11-08 | 374.05 |
| -67 | 2419729 | 1912-11-22 | 374.96 |
| -66 | 2420134 | 1914-01-01 | 375.18 |
| -65 | 2420495 | 1914-12-28 | 375.6 |
| -64 | 2420870 | 1916-01-07 | 375.1 |
| -63 | 2421248 | 1917-01-19 | 375.58 |
| -62 | 2421619 | 1918-01-25 | 375.44 |
| -61 | 2421988 | 1919-01-29 | 375.43 |
| -60 | 2422368 | 1920-02-13 | 377.29 |
| -59 | 2422737 | 1921-02-16 | 378.15 |
| -58 | 2423118 | 1922-03-04 | 378.58 |
| -57 | 2423509 | 1923-03-30 | 379 |
| -56 | 2423888 | 1924-04-12 | 379.45 |
| -55 | 2424275 | 1925-05-04 | 379.44 |
| -54 | 2424648 | 1926-05-12 | 379.45 |
| -53 | 2425019 | 1927-05-18 | 379.87 |
| -52 | 2425395 | 1928-05-28 | 379.61 |
| -51 | 2425780 | 1929-06-17 | 380.1 |
| -50 | 2426159 | 1930-07-01 | 381.29 |
| -49 | 2426538 | 1931-07-15 | 382.68 |
| -48 | 2426938 | 1932-08-18 | 383.66 |
| -47 | 2427306 | 1933-08-21 | 384.32 |
| -46 | 2427691 | 1934-09-10 | 384.72 |
| -45 | 2428088 | 1935-10-12 | 384.89 |
| -44 | 2428468 | 1936-10-26 | 384.11 |
| -43 | 2428850 | 1937-11-12 | 383.33 |
| -42 | 2429238 | 1938-12-05 | 383.52 |
| -41 | 2429625 | 1939-12-27 | 381.97 |
| -40 | 2430004 | 1941-01-09 | 380.76 |
| -39 | 2430373 | 1942-01-13 | 379.99 |
| -38 | 2430761 | 1943-02-05 | 379.57 |
| -37 | 2431147 | 1944-02-26 | 379.45 |
| -36 | 2431509 | 1945-02-22 | 379.15 |
| -35 | 2431895 | 1946-03-15 | 379.2 |
| -34 | 2432269 | 1947-03-24 | 379.6 |
| -33 | 2432657 | 1948-04-15 | 378.75 |
| -32 | 2433043 | 1949-05-06 | 377.81 |
| -31 | 2433412 | 1950-05-10 | 377.79 |
| -30 | 2433790 | 1951-05-23 | 376.56 |
| -29 | 2434176 | 1952-06-12 | 375.93 |
| -28 | 2434540 | 1953-06-11 | 375.15 |
| -27 | 2434906 | 1954-06-12 | 374.5 |
| -26 | 2435292 | 1955-07-03 | 374.3 |
| -25 | 2435660 | 1956-07-05 | 374.11 |
| -24 | 2436040 | 1957-07-20 | 374.14 |
| -23 | 2436417 | 1958-08-01 | 374.93 |
| -22 | 2436784 | 1959-08-03 | 374.95 |
| -21 | 2437156 | 1960-08-09 | 374.16 |
| -20 | 2437536 | 1961-08-24 | 374.16 |
| -19 | 2437912 | 1962-09-04 | 373.95 |
| -18 | 2438290 | 1963-09-17 | 374.41 |
| -17 | 2438659 | 1964-09-20 | 375.18 |
| -16 | 2439026 | 1965-09-22 | 375.43 |
| -15 | 2439404 | 1966-10-05 | 375.41 |
| -14 | 2439780 | 1967-10-16 | 375.77 |
| -13 | 2440163 | 1968-11-02 | 375.49 |
| -12 | 2440542 | 1969-11-16 | 375.9 |
| -11 | 2440915 | 1970-11-24 | 375.54 |
| -10 | 2441289 | 1971-12-03 | 374.87 |
| -9 | 2441668 | 1972-12-16 | 374.37 |
| -8 | 2442029 | 1973-12-12 | 374.67 |
| -7 | 2442414 | 1975-01-01 | 375.19 |
| -6 | 2442779 | 1976-01-01 | 375.93 |
| -5 | 2443156 | 1977-01-12 | 376.57 |
| -4 | 2443532 | 1978-01-23 | 377.69 |
| -3 | 2443924 | 1979-02-19 | 378.87 |
| -2 | 2444298 | 1980-02-28 | 379.38 |
| -1 | 2444675 | 1981-03-11 | 380.15 |
| 0 | 2445052 | 1982-03-23 | 380.35 |
| 1 | 2445441 | 1983-04-16 | 380.14 |
| 2 | 2445818 | 1984-04-27 | 379.72 |
| 3 | 2446200 | 1985-05-14 | 379.29 |
| 4 | 2446578 | 1986-05-27 | 379.06 |
| 5 | 2446960 | 1987-06-13 | 378.31 |
| 6 | 2447335 | 1988-06-22 | 377.82 |
| 7 | 2447715 | 1989-07-07 | 377.8 |
| 8 | 2448081 | 1990-07-08 | 377.61 |
| 9 | 2448468 | 1991-07-30 | 377.8 |
| 10 | 2448838 | 1992-08-03 | 377.79 |
| 11 | 2449224 | 1993-08-24 | 378.52 |
| 12 | 2449602 | 1994-09-06 | 379.72 |
| 13 | 2449978 | 1995-09-17 | 380.5 |
| 14 | 2450360 | 1996-10-03 | 380.5 |
| 15 | 2450734 | 1997-10-12 | 379.75 |
| 16 | 2451123 | 1998-11-05 | 378.66 |
| 17 | 2451516 | 1999-12-03 | 377.47 |
| 18 | 2451887 | 2000-12-08 | 376.15 |
| 19 | 2452265 | 2001-12-21 | 374.95 |
| 20 | 2452621 | 2002-12-12 | 373.72 |
| 21 | 2453000 | 2003-12-26 | 372.15 |
| 22 | 2453367 | 2004-12-27 | 371.05 |
| 23 | 2453739 | 2006-01-03 | 371.01 |
| 24 | 2454118 | 2007-01-17 | 371.44 |
| 25 | 2454487 | 2008-01-21 | 371.75 |
| 26 | 2454856 | 2009-01-24 | 371.73 |
| 27 | 2455224 | 2010-01-27 | 372.39 |
| 28 | 2455596 | 2011-02-03 | 372.99 |
| 29 | 2455977 | 2012-02-19 | 373.97 |
| 30 | 2456339 | 2013-02-15 | 375.15 |
| 31 | 2456719 | 2014-03-02 | 376.54 |
| 32 | 2457099 | 2015-03-17 | 377.52 |
| 33 | 2457477 | 2016-03-29 | 378.35 |
| 34 | 2457861 | 2017-04-17 | 379.4 |
| 35 | 2458235 | 2018-04-26 | 380.29 |
| 36 | 2458620 | 2019-05-16 | 380.4 |
| 37 | 2458995 | 2020-05-25 | 380.57 |
| 38 | 2459378 | 2021-06-12 | 380.86 |
| 39 | 2459767 | 2022-07-06 | 380.97 |
| 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. |