| E | O (JD) | O (dat) | Period |
| -63 | 2413260 | 1895-03-07 | 436 |
| -62 | 2413700 | 1896-05-20 | 435 |
| -61 | 2414120 | 1897-07-14 | 424.52 |
| -60 | 2414560 | 1898-09-27 | 421.86 |
| -59 | 2415000 | 1899-12-11 | 425.25 |
| -56 | 2416300 | 1903-07-04 | 427.61 |
| -43 | 2421720 | 1918-05-06 | 426.09 |
| -42 | 2422131 | 1919-06-21 | 424.57 |
| -39 | 2423540 | 1923-04-30 | 426.82 |
| -38 | 2423950 | 1924-06-13 | 432.26 |
| -37 | 2424330 | 1925-06-28 | 438.95 |
| -36 | 2424760 | 1926-09-01 | 442.68 |
| -35 | 2425320 | 1928-03-14 | 448.33 |
| -33 | 2426100 | 1930-05-03 | 455.42 |
| -32 | 2426530 | 1931-07-07 | 463.33 |
| -27 | 2428880 | 1937-12-12 | 465 |
| -26 | 2429370 | 1939-04-16 | 469.57 |
| -25 | 2429840 | 1940-07-29 | 481.82 |
| -24 | 2430370 | 1942-01-10 | 490.56 |
| -23 | 2430870 | 1943-05-25 | 497.86 |
| -22 | 2431350 | 1944-09-16 | 503.57 |
| -21 | 2431880 | 1946-02-28 | 510 |
| -20 | 2432360 | 1947-06-23 | 470 |
| -19 | 2432860 | 1948-11-04 | 450.88 |
| -18 | 2433400 | 1950-04-28 | 445.59 |
| -17 | 2433950 | 1951-10-30 | 440.29 |
| -6 | 2438570 | 1964-06-23 | 435.92 |
| -5 | 2438980 | 1965-08-07 | 430.25 |
| -4 | 2439400 | 1966-10-01 | 422.89 |
| -2 | 2440250 | 1969-01-28 | 418.77 |
| -1 | 2440663 | 1970-03-17 | 421.25 |
| 0 | 2441086 | 1971-05-14 | 423.75 |
| 1 | 2441488 | 1972-06-19 | 426 |
| 2 | 2441920 | 1973-08-25 | 431.21 |
| 3 | 2442370 | 1974-11-18 | 439.36 |
| 4 | 2442790 | 1976-01-12 | 451.07 |
| 5 | 2443250 | 1977-04-16 | 457.5 |
| 6 | 2443700 | 1978-07-10 | 458.21 |
| 7 | 2444200 | 1979-11-22 | 465.14 |
| 8 | 2444689 | 1981-03-25 | 471.36 |
| 9 | 2445124 | 1982-06-03 | 472.36 |
| 10 | 2445581 | 1983-09-03 | 475.43 |
| 11 | 2446091 | 1985-01-25 | 478.86 |
| 12 | 2446548 | 1986-04-27 | 485.29 |
| 13 | 2447015 | 1987-08-07 | 493.71 |
| 14 | 2447541 | 1989-01-14 | 499 |
| 15 | 2448052 | 1990-06-09 | 506.29 |
| 16 | 2448555 | 1991-10-25 | 516.71 |
| 17 | 2449062 | 1993-03-15 | 522.07 |
| 18 | 2449596 | 1994-08-31 | 522.93 |
| 19 | 2450131 | 1996-02-17 | 526.79 |
| 20 | 2450666 | 1997-08-05 | 530.21 |
| 21 | 2451199 | 1999-01-20 | 531.29 |
| 22 | 2451715 | 2000-06-19 | 530.21 |
| 23 | 2452267 | 2001-12-23 | 527.79 |
| 24 | 2452773 | 2003-05-13 | 527.5 |
| 25 | 2453323 | 2004-11-13 | 526.14 |
| 26 | 2453827 | 2006-04-01 | 522.64 |
| 27 | 2454359 | 2007-09-15 | 519.57 |
| 28 | 2454891 | 2009-02-28 | 516.71 |
| 29 | 2455389 | 2010-07-11 | 514.36 |
| 30 | 2455910 | 2011-12-14 | 513.14 |
| 31 | 2456404 | 2013-04-21 | 508.93 |
| 32 | 2456926 | 2014-09-25 | 507.43 |
| 33 | 2457425 | 2016-02-06 | 506.93 |
| 34 | 2457945 | 2017-07-10 | 502.71 |
| 35 | 2458430 | 2018-11-07 | 501.37 |
| 36 | 2458954 | 2020-04-14 | 503.06 |
| 37 | 2459442 | 2021-08-15 | 499.67 |
| 38 | 2459910 | 2022-11-26 | 495.6 |
| 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. |