| E | O (JD) | O (dat) | Period |
| -77 | 2413360 | 1895-06-15 | 336.9 |
| -76 | 2413690 | 1896-05-10 | 335.75 |
| -75 | 2414041 | 1897-04-26 | 333.66 |
| -74 | 2414380 | 1898-03-31 | 334.07 |
| -73 | 2414710 | 1899-02-24 | 334.23 |
| -72 | 2415040 | 1900-01-20 | 332.65 |
| -65 | 2417370 | 1906-06-08 | 331.5 |
| -64 | 2417710 | 1907-05-14 | 330.33 |
| -63 | 2418030 | 1908-03-29 | 329.41 |
| -62 | 2418350 | 1909-02-12 | 328.57 |
| -61 | 2418690 | 1910-01-18 | 327.36 |
| -56 | 2420310 | 1914-06-26 | 327.82 |
| -55 | 2420640 | 1915-05-22 | 329.55 |
| -54 | 2420970 | 1916-04-16 | 330.08 |
| -53 | 2421312 | 1917-03-24 | 331.09 |
| -52 | 2421640 | 1918-02-15 | 334.67 |
| -51 | 2421990 | 1919-01-31 | 336.33 |
| -48 | 2422972 | 1921-10-09 | 336.89 |
| -47 | 2423312 | 1922-09-14 | 337.94 |
| -46 | 2423662 | 1923-08-30 | 338.33 |
| -45 | 2424002 | 1924-08-04 | 339.63 |
| -44 | 2424344 | 1925-07-12 | 342.07 |
| -43 | 2424691 | 1926-06-24 | 341.79 |
| -42 | 2425029 | 1927-05-28 | 341.5 |
| -41 | 2425367 | 1928-04-30 | 341.36 |
| -40 | 2425706 | 1929-04-04 | 340.43 |
| -39 | 2426053 | 1930-03-17 | 340.71 |
| -38 | 2426392 | 1931-02-19 | 341.5 |
| -37 | 2426733 | 1932-01-26 | 342.31 |
| -36 | 2427068 | 1932-12-26 | 342.67 |
| -35 | 2427422 | 1933-12-15 | 342.17 |
| -34 | 2427755 | 1934-11-13 | 341.72 |
| -31 | 2428795 | 1937-09-18 | 340.44 |
| -30 | 2429132 | 1938-08-21 | 338.94 |
| -29 | 2429472 | 1939-07-27 | 338.61 |
| -28 | 2429804 | 1940-06-23 | 335 |
| -27 | 2430125 | 1941-05-10 | 330.29 |
| -26 | 2430466 | 1942-04-16 | 330.93 |
| -25 | 2430806 | 1943-03-22 | 329.21 |
| -24 | 2431104 | 1944-01-14 | 328.36 |
| -23 | 2431447 | 1944-12-22 | 329.21 |
| -22 | 2431790 | 1945-11-30 | 327.64 |
| -21 | 2432095 | 1946-10-01 | 329.36 |
| -20 | 2432431 | 1947-09-02 | 332.86 |
| -19 | 2432769 | 1948-08-05 | 331.36 |
| -18 | 2433090 | 1949-06-22 | 331.21 |
| -17 | 2433431 | 1950-05-29 | 333.43 |
| -16 | 2433780 | 1951-05-13 | 334.07 |
| -15 | 2434096 | 1952-03-24 | 334.71 |
| -14 | 2434426 | 1953-02-17 | 334.93 |
| -13 | 2434768 | 1954-01-25 | 333.86 |
| -12 | 2435109 | 1955-01-01 | 334 |
| -11 | 2435436 | 1955-11-24 | 336.64 |
| -10 | 2435774 | 1956-10-27 | 338.93 |
| -9 | 2436111 | 1957-09-29 | 338.86 |
| -8 | 2436441 | 1958-08-25 | 339.64 |
| -7 | 2436794 | 1959-08-13 | 340.64 |
| -6 | 2437145 | 1960-07-29 | 340 |
| -5 | 2437476 | 1961-06-25 | 341.29 |
| -4 | 2437824 | 1962-06-08 | 341.64 |
| -3 | 2438155 | 1963-05-05 | 339.57 |
| -2 | 2438490 | 1964-04-04 | 338.21 |
| -1 | 2438840 | 1965-03-20 | 338.29 |
| 0 | 2439178 | 1966-02-21 | 338.71 |
| 1 | 2439515 | 1967-01-24 | 338.29 |
| 2 | 2439841 | 1967-12-16 | 336.5 |
| 3 | 2440195 | 1968-12-04 | 335.29 |
| 4 | 2440526 | 1969-10-31 | 335.71 |
| 5 | 2440855 | 1970-09-25 | 336.86 |
| 6 | 2441186 | 1971-08-22 | 336.36 |
| 7 | 2441526 | 1972-07-27 | 335.57 |
| 8 | 2441867 | 1973-07-03 | 336.5 |
| 9 | 2442205 | 1974-06-06 | 337.36 |
| 10 | 2442540 | 1975-05-07 | 336.93 |
| 11 | 2442879 | 1976-04-10 | 336.43 |
| 12 | 2443213 | 1977-03-10 | 335.36 |
| 13 | 2443551 | 1978-02-11 | 334.36 |
| 14 | 2443878 | 1979-01-04 | 336.5 |
| 15 | 2444225 | 1979-12-17 | 337.71 |
| 16 | 2444542 | 1980-10-29 | 336.71 |
| 17 | 2444884 | 1981-10-06 | 336.57 |
| 18 | 2445246 | 1982-10-03 | 336.29 |
| 19 | 2445574 | 1983-08-27 | 336.43 |
| 20 | 2445904 | 1984-07-22 | 336.93 |
| 21 | 2446237 | 1985-06-20 | 334.71 |
| 22 | 2446574 | 1986-05-23 | 333.93 |
| 23 | 2446903 | 1987-04-17 | 335.07 |
| 24 | 2447240 | 1988-03-19 | 335.07 |
| 25 | 2447576 | 1989-02-18 | 334.64 |
| 26 | 2447919 | 1990-01-27 | 334.36 |
| 27 | 2448250 | 1990-12-24 | 334.79 |
| 28 | 2448582 | 1991-11-21 | 335.86 |
| 29 | 2448914 | 1992-10-18 | 334.07 |
| 30 | 2449244 | 1993-09-13 | 332.14 |
| 31 | 2449586 | 1994-08-21 | 332.57 |
| 32 | 2449932 | 1995-08-02 | 332.21 |
| 33 | 2450240 | 1996-06-05 | 332.29 |
| 34 | 2450579 | 1997-05-10 | 332.21 |
| 35 | 2450909 | 1998-04-05 | 330.43 |
| 36 | 2451238 | 1999-02-28 | 331.07 |
| 37 | 2451572 | 2000-01-28 | 332.07 |
| 38 | 2451909 | 2000-12-30 | 331.21 |
| 39 | 2452235 | 2001-11-21 | 332.43 |
| 40 | 2452572 | 2002-10-24 | 332.86 |
| 41 | 2452896 | 2003-09-13 | 332.29 |
| 42 | 2453229 | 2004-08-11 | 333 |
| 43 | 2453572 | 2005-07-20 | 334.14 |
| 44 | 2453898 | 2006-06-11 | 335.5 |
| 45 | 2454235 | 2007-05-14 | 336.07 |
| 46 | 2454571 | 2008-04-14 | 336.07 |
| 47 | 2454914 | 2009-03-23 | 336.5 |
| 48 | 2455251 | 2010-02-23 | 337.29 |
| 49 | 2455579 | 2011-01-17 | 338.79 |
| 50 | 2455927 | 2011-12-31 | 339.31 |
| 51 | 2456254 | 2012-11-22 | 338.33 |
| 52 | 2456601 | 2013-11-04 | 338.83 |
| 53 | 2456948 | 2014-10-17 | 339 |
| 53 | 2456948 | 2014-10-17 | 339 |
| 54 | 2457277 | 2015-09-11 | 337.79 |
| 55 | 2457619 | 2016-08-18 | 335.92 |
| 55 | 2457619 | 2016-08-18 | 335.92 |
| 56 | 2457946 | 2017-07-11 | 336.27 |
| 56 | 2457946 | 2017-07-11 | 336.27 |
| 57 | 2458291 | 2018-06-21 | 335.93 |
| 57 | 2458291 | 2018-06-21 | 335.93 |
| 58 | 2458627 | 2019-05-23 | 335.56 |
| 58 | 2458627 | 2019-05-23 | 335.56 |
| 59 | 2458961 | 2020-04-21 | 336.42 |
| 60 | 2459285 | 2021-03-11 | 335.64 |
| 60 | 2459285 | 2021-03-11 | 335.64 |
| 61 | 2459640 | 2022-03-01 | 334.18 |
| 61 | 2459640 | 2022-03-01 | 334.18 |
| 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. |