| E | O (JD) | O (dat) | Period |
| -125 | 2395855 | 1847-07-12 | 347.33 |
| -112 | 2400359 | 1859-11-10 | 347.64 |
| -111 | 2400709 | 1860-10-25 | 348.47 |
| -110 | 2401062 | 1861-10-13 | 348.46 |
| -109 | 2401410 | 1862-09-26 | 348.35 |
| -108 | 2401767 | 1863-09-18 | 346.35 |
| -107 | 2402119 | 1864-09-04 | 345.07 |
| -106 | 2402497 | 1865-09-17 | 344.67 |
| -104 | 2403161 | 1867-07-13 | 344.39 |
| -103 | 2403504 | 1868-06-20 | 344.36 |
| -91 | 2407611 | 1879-09-18 | 344.14 |
| -76 | 2412803 | 1893-12-05 | 343.8 |
| -75 | 2413135 | 1894-11-02 | 343.64 |
| -74 | 2413475 | 1895-10-08 | 343.97 |
| -73 | 2413840 | 1896-10-07 | 343.71 |
| -72 | 2414165 | 1897-08-28 | 344.05 |
| -71 | 2414481 | 1898-07-10 | 344.32 |
| -70 | 2414847 | 1899-07-11 | 345.97 |
| -69 | 2415201 | 1900-06-30 | 347.21 |
| -65 | 2416534 | 1904-02-23 | 344.63 |
| -63 | 2417271 | 1906-03-01 | 344.4 |
| -61 | 2417984 | 1908-02-12 | 343.91 |
| -60 | 2418339 | 1909-02-01 | 343.06 |
| -59 | 2418696 | 1910-01-24 | 343.6 |
| -53 | 2420658 | 1915-06-09 | 343.51 |
| -52 | 2421032 | 1916-06-17 | 342.27 |
| -51 | 2421370 | 1917-05-21 | 342.51 |
| -50 | 2421723 | 1918-05-09 | 343.25 |
| -48 | 2422465 | 1920-05-20 | 344.67 |
| -46 | 2423118 | 1922-03-04 | 348.84 |
| -45 | 2423466 | 1923-02-15 | 347.52 |
| -44 | 2423831 | 1924-02-15 | 347.07 |
| -43 | 2424165 | 1925-01-14 | 346.21 |
| -42 | 2424504 | 1925-12-19 | 345.77 |
| -41 | 2424856 | 1926-12-06 | 348.21 |
| -40 | 2425201 | 1927-11-16 | 348.38 |
| -39 | 2425548 | 1928-10-28 | 348.85 |
| -38 | 2425901 | 1929-10-16 | 350.36 |
| -37 | 2426261 | 1930-10-11 | 350.62 |
| -36 | 2426608 | 1931-09-23 | 349.98 |
| -35 | 2426954 | 1932-09-03 | 349.51 |
| -34 | 2427310 | 1933-08-25 | 347.94 |
| -33 | 2427664 | 1934-08-14 | 346.43 |
| -32 | 2428002 | 1935-07-18 | 344.33 |
| -31 | 2428343 | 1936-06-23 | 342.13 |
| -30 | 2428692 | 1937-06-07 | 340.9 |
| -29 | 2429021 | 1938-05-02 | 340.02 |
| -28 | 2429370 | 1939-04-16 | 339.92 |
| -26 | 2430045 | 1941-02-19 | 340.4 |
| -23 | 2431056 | 1943-11-27 | 340.91 |
| -22 | 2431400 | 1944-11-05 | 341.69 |
| -21 | 2431742 | 1945-10-13 | 343.01 |
| -20 | 2432092 | 1946-09-28 | 344.02 |
| -19 | 2432441 | 1947-09-12 | 346.07 |
| -18 | 2432788 | 1948-08-24 | 347.85 |
| -17 | 2433141 | 1949-08-12 | 347.85 |
| -16 | 2433490 | 1950-07-27 | 347.44 |
| -15 | 2433834 | 1951-07-06 | 346.55 |
| -14 | 2434184 | 1952-06-20 | 345.78 |
| -13 | 2434527 | 1953-05-29 | 345.02 |
| -12 | 2434872 | 1954-05-09 | 344.25 |
| -11 | 2435213 | 1955-04-15 | 343.94 |
| -10 | 2435555 | 1956-03-22 | 343.68 |
| -9 | 2435900 | 1957-03-02 | 343.29 |
| -8 | 2436243 | 1958-02-08 | 343.16 |
| -7 | 2436587 | 1959-01-18 | 343.85 |
| -6 | 2436933 | 1959-12-30 | 344.4 |
| -5 | 2437274 | 1960-12-05 | 344.66 |
| -4 | 2437615 | 1961-11-11 | 345.01 |
| -3 | 2437957 | 1962-10-19 | 345.08 |
| -2 | 2438318 | 1963-10-15 | 345.33 |
| -1 | 2438659 | 1964-09-20 | 345.19 |
| 0 | 2439001 | 1965-08-28 | 344.93 |
| 1 | 2439350 | 1966-08-12 | 344.55 |
| 2 | 2439689 | 1967-07-17 | 343.83 |
| 3 | 2440039 | 1968-07-01 | 342.69 |
| 4 | 2440377 | 1969-06-04 | 342.25 |
| 5 | 2440717 | 1970-05-10 | 342.4 |
| 6 | 2441062 | 1971-04-20 | 342.32 |
| 7 | 2441403 | 1972-03-26 | 343.18 |
| 8 | 2441741 | 1973-02-27 | 343.19 |
| 9 | 2442080 | 1974-02-01 | 343.47 |
| 10 | 2442436 | 1975-01-23 | 343.86 |
| 11 | 2442776 | 1975-12-29 | 344.18 |
| 12 | 2443133 | 1976-12-20 | 345.05 |
| 13 | 2443464 | 1977-11-16 | 345.9 |
| 14 | 2443805 | 1978-10-23 | 346.16 |
| 15 | 2444155 | 1979-10-08 | 346.05 |
| 16 | 2444501 | 1980-09-18 | 346.64 |
| 17 | 2444856 | 1981-09-08 | 346.43 |
| 18 | 2445205 | 1982-08-23 | 347.2 |
| 19 | 2445547 | 1983-07-31 | 347.02 |
| 20 | 2445893 | 1984-07-11 | 346.28 |
| 21 | 2446244 | 1985-06-27 | 345.53 |
| 22 | 2446580 | 1986-05-29 | 344.65 |
| 23 | 2446934 | 1987-05-18 | 345.36 |
| 24 | 2447276 | 1988-04-24 | 345.88 |
| 25 | 2447617 | 1989-03-31 | 346.55 |
| 26 | 2447959 | 1990-03-08 | 346.87 |
| 27 | 2448302 | 1991-02-14 | 347.68 |
| 28 | 2448671 | 1992-02-18 | 347.92 |
| 29 | 2449011 | 1993-01-23 | 348.78 |
| 30 | 2449365 | 1994-01-12 | 349.39 |
| 31 | 2449706 | 1994-12-19 | 349.9 |
| 32 | 2450058 | 1995-12-06 | 349.1 |
| 33 | 2450405 | 1996-11-17 | 348.02 |
| 34 | 2450759 | 1997-11-06 | 347.93 |
| 35 | 2451108 | 1998-10-21 | 347.22 |
| 36 | 2451463 | 1999-10-11 | 346.59 |
| 37 | 2451793 | 2000-09-05 | 345.82 |
| 38 | 2452142 | 2001-08-20 | 344.79 |
| 39 | 2452489 | 2002-08-02 | 343.35 |
| 40 | 2452831 | 2003-07-10 | 343.03 |
| 41 | 2453172 | 2004-06-15 | 342.95 |
| 42 | 2453521 | 2005-05-30 | 342.7 |
| 43 | 2453856 | 2006-04-30 | 341.18 |
| 44 | 2454190 | 2007-03-30 | 340.32 |
| 45 | 2454547 | 2008-03-21 | 340.39 |
| 46 | 2454891 | 2009-02-28 | 340.25 |
| 47 | 2455218 | 2010-01-21 | 340.02 |
| 48 | 2455545 | 2010-12-14 | 340.39 |
| 49 | 2455891 | 2011-11-25 | 340.87 |
| 50 | 2456245 | 2012-11-13 | 340.55 |
| 51 | 2456581 | 2013-10-15 | 341.56 |
| 52 | 2456920 | 2014-09-19 | 342.55 |
| 53 | 2457264 | 2015-08-29 | 342.71 |
| 54 | 2457613 | 2016-08-12 | 342.34 |
| 55 | 2457946 | 2017-07-11 | 341.97 |
| 56 | 2458298 | 2018-06-28 | 342.27 |
| 57 | 2458635 | 2019-05-31 | 342.28 |
| 58 | 2458973 | 2020-05-03 | 341.96 |
| 59 | 2459320 | 2021-04-15 | 341.57 |
| 60 | 2459660 | 2022-03-21 | 342.11 |
| 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. |