| E | O (JD) | O (dat) | Period |
| -61 | 2414815 | 1899-06-09 | 443.5 |
| -60 | 2415245 | 1900-08-13 | 443.56 |
| -52 | 2418761 | 1910-03-30 | 443.76 |
| -45 | 2421890 | 1918-10-23 | 443.74 |
| -43 | 2422778 | 1921-03-29 | 444.24 |
| -42 | 2423223 | 1922-06-17 | 446.17 |
| -41 | 2423669 | 1923-09-06 | 448.45 |
| -40 | 2424132 | 1924-12-12 | 449.67 |
| -39 | 2424586 | 1926-03-11 | 450.5 |
| -38 | 2425036 | 1927-06-04 | 451.43 |
| -37 | 2425481 | 1928-08-22 | 451.86 |
| -36 | 2425932 | 1929-11-16 | 450.86 |
| -35 | 2426376 | 1931-02-03 | 452.36 |
| -34 | 2426836 | 1932-05-08 | 453.36 |
| -33 | 2427291 | 1933-08-06 | 453.21 |
| -32 | 2427739 | 1934-10-28 | 454.14 |
| -31 | 2428216 | 1936-02-17 | 454.86 |
| -30 | 2428648 | 1937-04-24 | 453.93 |
| -29 | 2429110 | 1938-07-30 | 455.93 |
| -28 | 2429556 | 1939-10-19 | 456.57 |
| -27 | 2430024 | 1941-01-29 | 454.36 |
| -26 | 2430458 | 1942-04-08 | 453.71 |
| -25 | 2430955 | 1943-08-18 | 453.64 |
| -24 | 2431392 | 1944-10-28 | 453.79 |
| -23 | 2431833 | 1946-01-12 | 453.64 |
| -22 | 2432277 | 1947-04-01 | 449.86 |
| -21 | 2432740 | 1948-07-07 | 448.07 |
| -20 | 2433193 | 1949-10-03 | 451.57 |
| -19 | 2433640 | 1950-12-24 | 452.79 |
| -18 | 2434071 | 1952-02-28 | 457.29 |
| -17 | 2434549 | 1953-06-20 | 459.5 |
| -16 | 2434998 | 1954-09-12 | 457.07 |
| -15 | 2435451 | 1955-12-09 | 458.07 |
| -14 | 2435968 | 1957-05-09 | 458.36 |
| -13 | 2436398 | 1958-07-13 | 457.43 |
| -12 | 2436834 | 1959-09-22 | 457.93 |
| -11 | 2437290 | 1960-12-21 | 454.29 |
| -10 | 2437747 | 1962-03-23 | 452.57 |
| -9 | 2438204 | 1963-06-23 | 452.79 |
| -8 | 2438656 | 1964-09-17 | 451.93 |
| -7 | 2439123 | 1965-12-28 | 452.5 |
| -6 | 2439579 | 1967-03-29 | 453.07 |
| -5 | 2439992 | 1968-05-15 | 453.43 |
| -4 | 2440459 | 1969-08-25 | 449.86 |
| -3 | 2440913 | 1970-11-22 | 446.86 |
| -2 | 2441381 | 1972-03-04 | 450.36 |
| -1 | 2441827 | 1973-05-24 | 450.64 |
| 0 | 2442250 | 1974-07-21 | 446.79 |
| 1 | 2442708 | 1975-10-22 | 446.36 |
| 2 | 2443168 | 1977-01-24 | 445.79 |
| 3 | 2443592 | 1978-03-24 | 447.43 |
| 4 | 2444035 | 1979-06-10 | 448.43 |
| 5 | 2444508 | 1980-09-25 | 446.21 |
| 6 | 2444941 | 1981-12-02 | 446.71 |
| 7 | 2445400 | 1983-03-06 | 447.86 |
| 8 | 2445836 | 1984-05-15 | 445.64 |
| 9 | 2446287 | 1985-08-09 | 447.07 |
| 10 | 2446727 | 1986-10-23 | 448.86 |
| 11 | 2447170 | 1988-01-09 | 448.57 |
| 12 | 2447612 | 1989-03-26 | 449.86 |
| 13 | 2448096 | 1990-07-23 | 449.14 |
| 14 | 2448529 | 1991-09-29 | 450.43 |
| 15 | 2448987 | 1992-12-30 | 451.21 |
| 16 | 2449434 | 1994-03-22 | 451.64 |
| 17 | 2449868 | 1995-05-30 | 452.64 |
| 18 | 2450335 | 1996-09-08 | 452.71 |
| 19 | 2450764 | 1997-11-11 | 453.57 |
| 20 | 2451267 | 1999-03-29 | 453.29 |
| 21 | 2451695 | 2000-05-30 | 452.07 |
| 22 | 2452159 | 2001-09-06 | 452.36 |
| 23 | 2452612 | 2002-12-03 | 450.57 |
| 24 | 2453036 | 2004-01-31 | 449.86 |
| 25 | 2453496 | 2005-05-05 | 452.64 |
| 26 | 2453936 | 2006-07-19 | 454.14 |
| 27 | 2454403 | 2007-10-29 | 455.57 |
| 28 | 2454857 | 2009-01-25 | 456 |
| 29 | 2455334 | 2010-05-17 | 454.14 |
| 30 | 2455795 | 2011-08-21 | 451.5 |
| 31 | 2456231 | 2012-10-30 | 450.71 |
| 32 | 2456685 | 2014-01-27 | 450.29 |
| 33 | 2457105 | 2015-03-23 | 447.86 |
| 34 | 2457555 | 2016-06-15 | 446.86 |
| 35 | 2458015 | 2017-09-18 | 448.86 |
| 36 | 2458480 | 2018-12-27 | 451.6 |
| 37 | 2458919 | 2020-03-10 | 455.09 |
| 38 | 2459363 | 2021-05-28 | 454.92 |
| 39 | 2459837 | 2022-09-14 | 453.9 |
| 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. |