| E | O (JD) | O (dat) | Period |
| -79 | 2413820 | 1896-09-17 | 317.17 |
| -76 | 2414763 | 1899-04-18 | 316.28 |
| -75 | 2415100 | 1900-03-21 | 315.19 |
| -74 | 2415420 | 1901-02-04 | 314.53 |
| -73 | 2415728 | 1901-12-09 | 314.35 |
| -72 | 2416030 | 1902-10-07 | 314.3 |
| -68 | 2417300 | 1906-03-30 | 314.56 |
| -67 | 2417600 | 1907-01-24 | 314.79 |
| -66 | 2417910 | 1907-11-30 | 315.04 |
| -54 | 2421690 | 1918-04-06 | 315.39 |
| -49 | 2423261 | 1922-07-25 | 315.77 |
| -47 | 2423916 | 1924-05-10 | 316.04 |
| -46 | 2424242 | 1925-04-01 | 316.54 |
| -45 | 2424552 | 1926-02-05 | 317.11 |
| -44 | 2424872 | 1926-12-22 | 319.18 |
| -43 | 2425195 | 1927-11-10 | 319.81 |
| -42 | 2425511 | 1928-09-21 | 318.51 |
| -41 | 2425828 | 1929-08-04 | 317.9 |
| -40 | 2426151 | 1930-06-23 | 317.25 |
| -39 | 2426473 | 1931-05-11 | 317.03 |
| -38 | 2426785 | 1932-03-18 | 316.5 |
| -37 | 2427098 | 1933-01-25 | 316.91 |
| -36 | 2427412 | 1933-12-05 | 316.98 |
| -35 | 2427719 | 1934-10-08 | 316.86 |
| -32 | 2428685 | 1937-05-31 | 317.12 |
| -31 | 2428993 | 1938-04-04 | 318.24 |
| -30 | 2429326 | 1939-03-03 | 319.03 |
| -29 | 2429638 | 1940-01-09 | 319.51 |
| -28 | 2429951 | 1940-11-17 | 319.61 |
| -27 | 2430273 | 1941-10-05 | 318.4 |
| -26 | 2430610 | 1942-09-07 | 318.51 |
| -25 | 2430924 | 1943-07-18 | 318.16 |
| -24 | 2431237 | 1944-05-26 | 318.65 |
| -23 | 2431548 | 1945-04-02 | 318.07 |
| -22 | 2431853 | 1946-02-01 | 317.78 |
| -21 | 2432188 | 1947-01-02 | 317.62 |
| -20 | 2432509 | 1947-11-19 | 318.52 |
| -19 | 2432831 | 1948-10-06 | 319.42 |
| -18 | 2433134 | 1949-08-05 | 319.96 |
| -17 | 2433464 | 1950-07-01 | 320.24 |
| -16 | 2433783 | 1951-05-16 | 319.13 |
| -15 | 2434104 | 1952-04-01 | 318.8 |
| -14 | 2434426 | 1953-02-17 | 318.45 |
| -13 | 2434743 | 1953-12-31 | 318.2 |
| -12 | 2435065 | 1954-11-18 | 317.11 |
| -11 | 2435372 | 1955-09-21 | 316.49 |
| -10 | 2435691 | 1956-08-05 | 316.15 |
| -9 | 2436006 | 1957-06-16 | 316.05 |
| -8 | 2436321 | 1958-04-27 | 315.95 |
| -7 | 2436637 | 1959-03-09 | 316 |
| -6 | 2436952 | 1960-01-18 | 316.68 |
| -5 | 2437273 | 1960-12-04 | 317.67 |
| -4 | 2437591 | 1961-10-18 | 319.29 |
| -3 | 2437902 | 1962-08-25 | 320.93 |
| -2 | 2438220 | 1963-07-09 | 321.66 |
| -1 | 2438543 | 1964-05-27 | 322.44 |
| 0 | 2438877 | 1965-04-26 | 322.65 |
| 1 | 2439209 | 1966-03-24 | 322.61 |
| 2 | 2439535 | 1967-02-13 | 321.8 |
| 3 | 2439843 | 1967-12-18 | 319.75 |
| 4 | 2440169 | 1968-11-08 | 317.56 |
| 5 | 2440485 | 1969-09-20 | 315.42 |
| 6 | 2440801 | 1970-08-02 | 314.17 |
| 7 | 2441108 | 1971-06-05 | 313.49 |
| 8 | 2441411 | 1972-04-03 | 313.51 |
| 9 | 2441728 | 1973-02-14 | 313.55 |
| 10 | 2442043 | 1973-12-26 | 313.53 |
| 11 | 2442362 | 1974-11-10 | 313.06 |
| 12 | 2442673 | 1975-09-17 | 313.13 |
| 13 | 2442990 | 1976-07-30 | 313.25 |
| 14 | 2443312 | 1977-06-17 | 312.94 |
| 15 | 2443613 | 1978-04-14 | 312.78 |
| 16 | 2443913 | 1979-02-08 | 312.85 |
| 17 | 2444231 | 1979-12-23 | 312.92 |
| 18 | 2444550 | 1980-11-06 | 312.98 |
| 19 | 2444865 | 1981-09-17 | 313.28 |
| 20 | 2445179 | 1982-07-28 | 314.3 |
| 21 | 2445496 | 1983-06-10 | 315.56 |
| 22 | 2445804 | 1984-04-13 | 314.96 |
| 23 | 2446119 | 1985-02-22 | 314.73 |
| 24 | 2446433 | 1986-01-02 | 314.58 |
| 25 | 2446751 | 1986-11-16 | 315.1 |
| 26 | 2447083 | 1987-10-14 | 315.52 |
| 27 | 2447376 | 1988-08-02 | 316.08 |
| 28 | 2447695 | 1989-06-17 | 316.21 |
| 29 | 2448007 | 1990-04-25 | 315.99 |
| 30 | 2448335 | 1991-03-19 | 315.87 |
| 31 | 2448650 | 1992-01-28 | 316.06 |
| 32 | 2448967 | 1992-12-10 | 316.62 |
| 33 | 2449282 | 1993-10-21 | 316.6 |
| 34 | 2449592 | 1994-08-27 | 316.39 |
| 35 | 2449912 | 1995-07-13 | 316.36 |
| 36 | 2450233 | 1996-05-29 | 316.85 |
| 37 | 2450539 | 1997-03-31 | 317.44 |
| 38 | 2450866 | 1998-02-21 | 317.16 |
| 39 | 2451177 | 1998-12-29 | 316.82 |
| 40 | 2451503 | 1999-11-20 | 315.99 |
| 41 | 2451820 | 2000-10-02 | 315.62 |
| 42 | 2452141 | 2001-08-19 | 315.88 |
| 43 | 2452440 | 2002-06-14 | 316.16 |
| 44 | 2452755 | 2003-04-25 | 317.72 |
| 45 | 2453067 | 2004-03-02 | 317.36 |
| 46 | 2453388 | 2005-01-17 | 317.32 |
| 47 | 2453712 | 2005-12-07 | 317.21 |
| 48 | 2454041 | 2006-11-01 | 317.65 |
| 49 | 2454377 | 2007-10-03 | 317.5 |
| 50 | 2454664 | 2008-07-16 | 316.77 |
| 51 | 2454977 | 2009-05-25 | 315.33 |
| 52 | 2455290 | 2010-04-03 | 314.56 |
| 53 | 2455611 | 2011-02-18 | 313.87 |
| 54 | 2455933 | 2012-01-06 | 313.7 |
| 55 | 2456241 | 2012-11-09 | 315.14 |
| 56 | 2456548 | 2013-09-12 | 315.13 |
| 57 | 2456874 | 2014-08-04 | 314.86 |
| 58 | 2457184 | 2015-06-10 | 314.17 |
| 59 | 2457495 | 2016-04-16 | 314.31 |
| 60 | 2457818 | 2017-03-05 | 314.84 |
| 61 | 2458130 | 2018-01-11 | 315.24 |
| 62 | 2458442 | 2018-11-19 | 314.94 |
| 63 | 2458750 | 2019-09-23 | 315.32 |
| 64 | 2459075 | 2020-08-13 | 315.49 |
| 65 | 2459390 | 2021-06-24 | 315.21 |
| 66 | 2459709 | 2022-05-09 | 316.11 |
| 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. |