| E | O (JD) | O (dat) | Period |
| -95 | 2409881 | 1885-12-05 | 375.7 |
| -94 | 2410257 | 1886-12-16 | 376.25 |
| -93 | 2410628 | 1887-12-22 | 376.69 |
| -92 | 2411001 | 1888-12-29 | 375.52 |
| -91 | 2411381 | 1890-01-13 | 374 |
| -90 | 2411760 | 1891-01-27 | 373.93 |
| -89 | 2412136 | 1892-02-07 | 375.71 |
| -88 | 2412506 | 1893-02-11 | 375.29 |
| -87 | 2412868 | 1894-02-08 | 373.93 |
| -86 | 2413252 | 1895-02-27 | 374 |
| -85 | 2413637 | 1896-03-18 | 373.71 |
| -84 | 2413999 | 1897-03-15 | 374.5 |
| -83 | 2414377 | 1898-03-28 | 374.86 |
| -82 | 2414755 | 1899-04-10 | 372.29 |
| -81 | 2415119 | 1900-04-09 | 371.29 |
| -80 | 2415498 | 1901-04-23 | 371.64 |
| -79 | 2415870 | 1902-04-30 | 371.14 |
| -78 | 2416231 | 1903-04-26 | 371.14 |
| -77 | 2416603 | 1904-05-02 | 371 |
| -76 | 2416976 | 1905-05-10 | 370.64 |
| -75 | 2417352 | 1906-05-21 | 370.5 |
| -74 | 2417718 | 1907-05-22 | 370.21 |
| -73 | 2418093 | 1908-05-31 | 368.71 |
| -72 | 2418464 | 1909-06-06 | 367.5 |
| -71 | 2418824 | 1910-06-01 | 367.43 |
| -70 | 2419193 | 1911-06-05 | 366.5 |
| -69 | 2419548 | 1912-05-25 | 365.93 |
| -68 | 2419925 | 1913-06-06 | 367.5 |
| -67 | 2420289 | 1914-06-05 | 368.86 |
| -66 | 2420653 | 1915-06-04 | 369.86 |
| -65 | 2421027 | 1916-06-12 | 371.79 |
| -64 | 2421406 | 1917-06-26 | 373 |
| -63 | 2421775 | 1918-06-30 | 374.21 |
| -62 | 2422144 | 1919-07-04 | 375.21 |
| -61 | 2422534 | 1920-07-28 | 374.71 |
| -60 | 2422902 | 1921-07-31 | 375.07 |
| -59 | 2423279 | 1922-08-12 | 376 |
| -58 | 2423654 | 1923-08-22 | 375.21 |
| -57 | 2424025 | 1924-08-27 | 375.57 |
| -56 | 2424407 | 1925-09-13 | 377.43 |
| -55 | 2424776 | 1926-09-17 | 378.21 |
| -54 | 2425155 | 1927-10-01 | 378.14 |
| -53 | 2425539 | 1928-10-19 | 377.93 |
| -52 | 2425926 | 1929-11-10 | 378.5 |
| -51 | 2426302 | 1930-11-21 | 377.93 |
| -50 | 2426671 | 1931-11-25 | 376.36 |
| -49 | 2427052 | 1932-12-10 | 374.07 |
| -48 | 2427430 | 1933-12-23 | 371.5 |
| -47 | 2427792 | 1934-12-20 | 371.64 |
| -46 | 2428171 | 1936-01-03 | 370.71 |
| -45 | 2428531 | 1936-12-28 | 368.43 |
| -44 | 2428898 | 1937-12-30 | 368.21 |
| -43 | 2429278 | 1939-01-14 | 367.79 |
| -42 | 2429635 | 1940-01-06 | 367.93 |
| -41 | 2430005 | 1941-01-10 | 368.64 |
| -40 | 2430372 | 1942-01-12 | 367.86 |
| -39 | 2430740 | 1943-01-15 | 368.36 |
| -38 | 2431113 | 1944-01-23 | 369.07 |
| -37 | 2431477 | 1945-01-21 | 369.14 |
| -36 | 2431849 | 1946-01-28 | 370.36 |
| -35 | 2432221 | 1947-02-04 | 371.79 |
| -34 | 2432586 | 1948-02-04 | 372.64 |
| -33 | 2432959 | 1949-02-11 | 373.21 |
| -32 | 2433338 | 1950-02-25 | 373 |
| -31 | 2433720 | 1951-03-14 | 373.43 |
| -30 | 2434087 | 1952-03-15 | 373.93 |
| -29 | 2434464 | 1953-03-27 | 373.71 |
| -28 | 2434828 | 1954-03-26 | 374.21 |
| -27 | 2435207 | 1955-04-09 | 374.93 |
| -26 | 2435573 | 1956-04-09 | 374.79 |
| -25 | 2435956 | 1957-04-27 | 374.21 |
| -24 | 2436341 | 1958-05-17 | 373.57 |
| -23 | 2436715 | 1959-05-26 | 373.93 |
| -22 | 2437083 | 1960-05-28 | 373.71 |
| -21 | 2437448 | 1961-05-28 | 371.79 |
| -20 | 2437817 | 1962-06-01 | 371.5 |
| -19 | 2438198 | 1963-06-17 | 372.07 |
| -18 | 2438563 | 1964-06-16 | 371.29 |
| -17 | 2438939 | 1965-06-27 | 371.14 |
| -16 | 2439318 | 1966-07-11 | 372.43 |
| -15 | 2439689 | 1967-07-17 | 372.57 |
| -14 | 2440040 | 1968-07-02 | 371.86 |
| -13 | 2440421 | 1969-07-18 | 370.07 |
| -12 | 2440808 | 1970-08-09 | 368.93 |
| -11 | 2441169 | 1971-08-05 | 371.43 |
| -10 | 2441539 | 1972-08-09 | 373.57 |
| -9 | 2441899 | 1973-08-04 | 372.57 |
| -8 | 2442273 | 1974-08-13 | 371.43 |
| -7 | 2442656 | 1975-08-31 | 371.5 |
| -6 | 2443035 | 1976-09-13 | 373.29 |
| -5 | 2443410 | 1977-09-23 | 374.79 |
| -4 | 2443767 | 1978-09-15 | 374 |
| -3 | 2444142 | 1979-09-25 | 373.43 |
| -2 | 2444522 | 1980-10-09 | 373.21 |
| -1 | 2444897 | 1981-10-19 | 373.21 |
| 0 | 2445268 | 1982-10-25 | 373.43 |
| 1 | 2445651 | 1983-11-12 | 372.14 |
| 2 | 2446019 | 1984-11-14 | 370.21 |
| 3 | 2446383 | 1985-11-13 | 368.64 |
| 4 | 2446754 | 1986-11-19 | 366.5 |
| 5 | 2447120 | 1987-11-20 | 365.36 |
| 6 | 2447482 | 1988-11-16 | 364.71 |
| 7 | 2447844 | 1989-11-13 | 363.29 |
| 8 | 2448206 | 1990-11-10 | 363 |
| 9 | 2448579 | 1991-11-18 | 363.21 |
| 10 | 2448929 | 1992-11-02 | 364 |
| 11 | 2449294 | 1993-11-02 | 365.29 |
| 12 | 2449662 | 1994-11-05 | 365.57 |
| 13 | 2450025 | 1995-11-03 | 367.21 |
| 14 | 2450397 | 1996-11-09 | 370.07 |
| 15 | 2450767 | 1997-11-14 | 371.36 |
| 16 | 2451136 | 1998-11-18 | 372.93 |
| 17 | 2451513 | 1999-11-30 | 374.14 |
| 18 | 2451891 | 2000-12-12 | 374.21 |
| 19 | 2452264 | 2001-12-20 | 375.29 |
| 20 | 2452644 | 2003-01-04 | 376.29 |
| 21 | 2453016 | 2004-01-11 | 375.93 |
| 22 | 2453387 | 2005-01-16 | 375.71 |
| 23 | 2453770 | 2006-02-03 | 375.43 |
| 24 | 2454147 | 2007-02-15 | 375.07 |
| 25 | 2454520 | 2008-02-23 | 375.43 |
| 26 | 2454895 | 2009-03-04 | 374.29 |
| 27 | 2455269 | 2010-03-13 | 372.64 |
| 28 | 2455642 | 2011-03-21 | 372.5 |
| 29 | 2456017 | 2012-03-30 | 372 |
| 30 | 2456380 | 2013-03-28 | 371.93 |
| 31 | 2456754 | 2014-04-06 | 371.5 |
| 32 | 2457128 | 2015-04-15 | 370.86 |
| 33 | 2457495 | 2016-04-16 | 371.86 |
| 34 | 2457876 | 2017-05-02 | 371.43 |
| 35 | 2458236 | 2018-04-27 | 370.36 |
| 36 | 2458615 | 2019-05-11 | 370.95 |
| 37 | 2458988 | 2020-05-18 | 370.2 |
| 38 | 2459346 | 2021-05-11 | 370.5 |
| 39 | 2459721 | 2022-05-21 | 372.6 |
| 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. |