| E | O (JD) | O (dat) | Period |
| -58 | 2415105 | 1900-03-26 | 497.73 |
| -56 | 2416130 | 1903-01-15 | 499.13 |
| -55 | 2416633 | 1904-06-01 | 498.65 |
| -54 | 2417113 | 1905-09-24 | 499.02 |
| -53 | 2417614 | 1907-02-07 | 499.1 |
| -51 | 2418620 | 1909-11-09 | 498.45 |
| -49 | 2419604 | 1912-07-20 | 498.95 |
| -47 | 2420604 | 1915-04-16 | 499.2 |
| -46 | 2421112 | 1916-09-05 | 499.37 |
| -45 | 2421620 | 1918-01-26 | 500.35 |
| -44 | 2422105 | 1919-05-26 | 501.6 |
| -43 | 2422606 | 1920-10-08 | 501.29 |
| -42 | 2423116 | 1922-03-02 | 499.79 |
| -41 | 2423614 | 1923-07-13 | 501.79 |
| -40 | 2424118 | 1924-11-28 | 504.14 |
| -39 | 2424616 | 1926-04-10 | 501.5 |
| -38 | 2425113 | 1927-08-20 | 498.64 |
| -37 | 2425637 | 1929-01-25 | 496.5 |
| -36 | 2426132 | 1930-06-04 | 493.93 |
| -35 | 2426611 | 1931-09-26 | 493.07 |
| -34 | 2427100 | 1933-01-27 | 490.57 |
| -33 | 2427583 | 1934-05-25 | 486.86 |
| -32 | 2428066 | 1935-09-20 | 486.57 |
| -31 | 2428566 | 1937-02-01 | 485.64 |
| -30 | 2429052 | 1938-06-02 | 484.43 |
| -29 | 2429533 | 1939-09-26 | 485.86 |
| -28 | 2430022 | 1941-01-27 | 485.29 |
| -27 | 2430488 | 1942-05-08 | 484.87 |
| -26 | 2430977 | 1943-09-09 | 485.56 |
| -25 | 2431474 | 1945-01-18 | 486.13 |
| -24 | 2431952 | 1946-05-11 | 487.88 |
| -22 | 2432939 | 1949-01-22 | 488.38 |
| -21 | 2433415 | 1950-05-13 | 488.13 |
| -20 | 2433918 | 1951-09-28 | 489 |
| -19 | 2434398 | 1953-01-20 | 487.87 |
| -18 | 2434881 | 1954-05-18 | 487.21 |
| -17 | 2435380 | 1955-09-29 | 486.5 |
| -16 | 2435870 | 1957-01-31 | 484.5 |
| -15 | 2436339 | 1958-05-15 | 484.86 |
| -14 | 2436836 | 1959-09-24 | 484.07 |
| -13 | 2437308 | 1961-01-08 | 480.93 |
| -12 | 2437791 | 1962-05-06 | 478.93 |
| -11 | 2438276 | 1963-09-03 | 477.5 |
| -10 | 2438762 | 1965-01-01 | 475.29 |
| -9 | 2439221 | 1966-04-05 | 474 |
| -8 | 2439693 | 1967-07-21 | 469.93 |
| -7 | 2440167 | 1968-11-06 | 467.14 |
| -6 | 2440631 | 1970-02-13 | 468.14 |
| -5 | 2441104 | 1971-06-01 | 468.57 |
| -4 | 2441542 | 1972-08-12 | 467.5 |
| -3 | 2442036 | 1973-12-19 | 464.71 |
| -2 | 2442501 | 1975-03-29 | 462.71 |
| -1 | 2442973 | 1976-07-13 | 465.5 |
| 0 | 2443432 | 1977-10-15 | 464.93 |
| 1 | 2443872 | 1978-12-29 | 460.71 |
| 2 | 2444341 | 1980-04-11 | 459.71 |
| 3 | 2444822 | 1981-08-05 | 460.5 |
| 4 | 2445265 | 1982-10-22 | 463.29 |
| 5 | 2445722 | 1984-01-22 | 463.5 |
| 6 | 2446188 | 1985-05-02 | 461.43 |
| 7 | 2446664 | 1986-08-21 | 463.5 |
| 8 | 2447126 | 1987-11-26 | 465.07 |
| 9 | 2447576 | 1989-02-18 | 464 |
| 10 | 2448047 | 1990-06-04 | 464.14 |
| 11 | 2448529 | 1991-09-29 | 462.5 |
| 12 | 2448969 | 1992-12-12 | 461.5 |
| 13 | 2449437 | 1994-03-25 | 462 |
| 14 | 2449913 | 1995-07-14 | 456.36 |
| 15 | 2450352 | 1996-09-25 | 454.5 |
| 16 | 2450811 | 1997-12-28 | 456.29 |
| 17 | 2451280 | 1999-04-11 | 452 |
| 18 | 2451685 | 2000-05-20 | 449.86 |
| 19 | 2452176 | 2001-09-23 | 448.71 |
| 20 | 2452618 | 2002-12-09 | 446.43 |
| 21 | 2453060 | 2004-02-24 | 447.79 |
| 22 | 2453503 | 2005-05-12 | 446.43 |
| 23 | 2453942 | 2006-07-25 | 444.43 |
| 24 | 2454399 | 2007-10-25 | 445.43 |
| 25 | 2454835 | 2009-01-03 | 446 |
| 26 | 2455276 | 2010-03-20 | 447.71 |
| 27 | 2455740 | 2011-06-27 | 447.21 |
| 28 | 2456174 | 2012-09-03 | 447.14 |
| 29 | 2456633 | 2013-12-06 | 450 |
| 30 | 2457080 | 2015-02-26 | 450.21 |
| 31 | 2457522 | 2016-05-13 | 450.14 |
| 32 | 2457972 | 2017-08-06 | 449.57 |
| 33 | 2458439 | 2018-11-16 | 448.03 |
| 34 | 2458880 | 2020-01-31 | 450.69 |
| 35 | 2459336 | 2021-05-01 | 452.67 |
| 36 | 2459765 | 2022-07-04 | 453.2 |
| 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. |