| E | O (JD) | O (dat) | Period |
| -96 | 2411870 | 1891-05-17 | 328.57 |
| -95 | 2412220 | 1892-05-01 | 326.96 |
| -90 | 2413860 | 1896-10-27 | 325.8 |
| -88 | 2414490 | 1898-07-19 | 326.29 |
| -87 | 2414835 | 1899-06-29 | 325.49 |
| -86 | 2415145 | 1900-05-05 | 324.27 |
| -84 | 2415805 | 1902-02-24 | 323.06 |
| -83 | 2416110 | 1902-12-26 | 322.37 |
| -82 | 2416443 | 1903-11-24 | 324.81 |
| -81 | 2416771 | 1904-10-17 | 326.47 |
| -80 | 2417071 | 1905-08-13 | 327.15 |
| -79 | 2417412 | 1906-07-20 | 328.79 |
| -78 | 2417765 | 1907-07-08 | 326.19 |
| -77 | 2418082 | 1908-05-20 | 326.28 |
| -76 | 2418413 | 1909-04-16 | 327.33 |
| -75 | 2418743 | 1910-03-12 | 325.17 |
| -72 | 2419690 | 1912-10-14 | 324.33 |
| -71 | 2420025 | 1913-09-14 | 324.83 |
| -70 | 2420350 | 1914-08-05 | 324.89 |
| -69 | 2420680 | 1915-07-01 | 326.69 |
| -68 | 2421005 | 1916-05-21 | 327.78 |
| -67 | 2421337 | 1917-04-18 | 326.92 |
| -66 | 2421667 | 1918-03-14 | 326.14 |
| -65 | 2421993 | 1919-02-03 | 324.92 |
| -64 | 2422311 | 1919-12-18 | 324 |
| -63 | 2422641 | 1920-11-12 | 323.28 |
| -62 | 2422955 | 1921-09-22 | 322.79 |
| -61 | 2423279 | 1922-08-12 | 322.87 |
| -60 | 2423599 | 1923-06-28 | 323.65 |
| -59 | 2423931 | 1924-05-25 | 324.15 |
| -58 | 2424248 | 1925-04-07 | 325 |
| -57 | 2424576 | 1926-03-01 | 326.07 |
| -56 | 2424907 | 1927-01-26 | 326.64 |
| -55 | 2425227 | 1927-12-12 | 327.35 |
| -54 | 2425557 | 1928-11-06 | 327.92 |
| -53 | 2425886 | 1929-10-01 | 327.21 |
| -52 | 2426217 | 1930-08-28 | 327.29 |
| -51 | 2426545 | 1931-07-22 | 328.22 |
| -50 | 2426870 | 1932-06-11 | 328.8 |
| -49 | 2427194 | 1933-05-01 | 329.3 |
| -48 | 2427522 | 1934-03-25 | 328.93 |
| -47 | 2427857 | 1935-02-23 | 328 |
| -46 | 2428189 | 1936-01-21 | 328.07 |
| -45 | 2428524 | 1936-12-21 | 329.21 |
| -44 | 2428843 | 1937-11-05 | 329.28 |
| -43 | 2429164 | 1938-09-22 | 328.57 |
| -42 | 2429493 | 1939-08-17 | 327.78 |
| -41 | 2429832 | 1940-07-21 | 327.22 |
| -40 | 2430157 | 1941-06-11 | 328.08 |
| -39 | 2430489 | 1942-05-09 | 330.08 |
| -38 | 2430813 | 1943-03-29 | 330.72 |
| -37 | 2431135 | 1944-02-14 | 330.57 |
| -36 | 2431465 | 1945-01-09 | 331.5 |
| -35 | 2431813 | 1945-12-23 | 332.14 |
| -34 | 2432142 | 1946-11-17 | 333.14 |
| -33 | 2432475 | 1947-10-16 | 333.14 |
| -32 | 2432812 | 1948-09-17 | 331.5 |
| -31 | 2433140 | 1949-08-11 | 330.72 |
| -30 | 2433472 | 1950-07-09 | 330.22 |
| -29 | 2433792 | 1951-05-25 | 330.15 |
| -28 | 2434127 | 1952-04-24 | 332.22 |
| -27 | 2434458 | 1953-03-21 | 333.21 |
| -26 | 2434782 | 1954-02-08 | 333.78 |
| -25 | 2435127 | 1955-01-19 | 334.35 |
| -24 | 2435476 | 1956-01-03 | 334.21 |
| -23 | 2435801 | 1956-11-23 | 334.57 |
| -22 | 2436136 | 1957-10-24 | 333.28 |
| -21 | 2436464 | 1958-09-17 | 330.36 |
| -20 | 2436800 | 1959-08-19 | 328.94 |
| -19 | 2437124 | 1960-07-08 | 328.93 |
| -18 | 2437451 | 1961-05-31 | 328.92 |
| -17 | 2437777 | 1962-04-22 | 328.57 |
| -16 | 2438105 | 1963-03-16 | 327.85 |
| -15 | 2438437 | 1964-02-11 | 327.71 |
| -14 | 2438768 | 1965-01-07 | 326.71 |
| -13 | 2439096 | 1965-12-01 | 325.92 |
| -12 | 2439418 | 1966-10-19 | 325.72 |
| -11 | 2439745 | 1967-09-11 | 324.94 |
| -10 | 2440057 | 1968-07-19 | 323.37 |
| -9 | 2440388 | 1969-06-15 | 322.79 |
| -8 | 2440714 | 1970-05-07 | 322.85 |
| -7 | 2441040 | 1971-03-29 | 323.07 |
| -6 | 2441351 | 1972-02-03 | 322.92 |
| -5 | 2441682 | 1972-12-30 | 321.85 |
| -4 | 2442001 | 1973-11-14 | 321.5 |
| -3 | 2442324 | 1974-10-03 | 322.5 |
| -2 | 2442642 | 1975-08-17 | 323.43 |
| -1 | 2442966 | 1976-07-06 | 324.01 |
| 0 | 2443289 | 1977-05-25 | 324.51 |
| 1 | 2443617 | 1978-04-18 | 324.58 |
| 2 | 2443944 | 1979-03-11 | 325.79 |
| 3 | 2444275 | 1980-02-05 | 327.42 |
| 4 | 2444593 | 1980-12-19 | 328.71 |
| 5 | 2444917 | 1981-11-08 | 329.64 |
| 6 | 2445252 | 1982-10-09 | 329.71 |
| 7 | 2445587 | 1983-09-09 | 330.57 |
| 8 | 2445921 | 1984-08-08 | 331.5 |
| 9 | 2446255 | 1985-07-08 | 331.72 |
| 10 | 2446580 | 1986-05-29 | 331.08 |
| 11 | 2446916 | 1987-04-30 | 330.51 |
| 12 | 2447235 | 1988-03-14 | 330 |
| 13 | 2447578 | 1989-02-20 | 328.5 |
| 14 | 2447896 | 1990-01-04 | 328 |
| 15 | 2448239 | 1990-12-13 | 327.92 |
| 16 | 2448557 | 1991-10-27 | 327.64 |
| 17 | 2448877 | 1992-09-11 | 327.71 |
| 18 | 2449211 | 1993-08-11 | 327.07 |
| 19 | 2449531 | 1994-06-27 | 326.29 |
| 20 | 2449869 | 1995-05-31 | 326.94 |
| 21 | 2450193 | 1996-04-19 | 326.94 |
| 22 | 2450521 | 1997-03-13 | 327.15 |
| 23 | 2450843 | 1998-01-29 | 326.57 |
| 24 | 2451168 | 1998-12-20 | 325.85 |
| 25 | 2451497 | 1999-11-14 | 325.71 |
| 26 | 2451825 | 2000-10-07 | 325.85 |
| 27 | 2452147 | 2001-08-25 | 327 |
| 28 | 2452477 | 2002-07-21 | 326.35 |
| 29 | 2452797 | 2003-06-06 | 326.22 |
| 30 | 2453129 | 2004-05-03 | 327.08 |
| 31 | 2453460 | 2005-03-30 | 326.29 |
| 32 | 2453774 | 2006-02-07 | 326.21 |
| 33 | 2454115 | 2007-01-14 | 326.35 |
| 34 | 2454436 | 2007-12-01 | 325.64 |
| 35 | 2454756 | 2008-10-16 | 326.64 |
| 36 | 2455085 | 2009-09-10 | 326.92 |
| 37 | 2455410 | 2010-08-01 | 326.42 |
| 38 | 2455738 | 2011-06-25 | 327.22 |
| 39 | 2456069 | 2012-05-21 | 327.65 |
| 40 | 2456397 | 2013-04-14 | 327.37 |
| 41 | 2456724 | 2014-03-07 | 327.29 |
| 42 | 2457049 | 2015-01-26 | 327.35 |
| 43 | 2457379 | 2015-12-22 | 327.21 |
| 44 | 2457699 | 2016-11-06 | 327.5 |
| 45 | 2458031 | 2017-10-04 | 327.85 |
| 46 | 2458359 | 2018-08-28 | 328.14 |
| 47 | 2458688 | 2019-07-23 | 328.75 |
| 48 | 2459018 | 2020-06-17 | 329.25 |
| 49 | 2459345 | 2021-05-10 | 329.01 |
| 50 | 2459677 | 2022-04-07 | 329.21 |
| 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. |