| E | O (JD) | O (dat) | Period |
| -63 | 2413360 | 1895-06-15 | 411.97 |
| -62 | 2413766 | 1896-07-25 | 412.17 |
| -61 | 2414177 | 1897-09-09 | 412.34 |
| -60 | 2414588 | 1898-10-25 | 413.49 |
| -56 | 2416230 | 1903-04-25 | 412.88 |
| -55 | 2416660 | 1904-06-28 | 412.19 |
| -54 | 2417066 | 1905-08-08 | 412.73 |
| -53 | 2417480 | 1906-09-26 | 413.61 |
| -52 | 2417920 | 1907-12-10 | 414.26 |
| -51 | 2418294 | 1908-12-18 | 415.81 |
| -50 | 2418696 | 1910-01-24 | 417.13 |
| -48 | 2419550 | 1912-05-27 | 416.9 |
| -47 | 2419981 | 1913-08-01 | 416.57 |
| -46 | 2420389 | 1914-09-13 | 416.23 |
| -45 | 2420824 | 1915-11-22 | 416.82 |
| -41 | 2422501 | 1920-06-25 | 415.59 |
| -40 | 2422880 | 1921-07-09 | 413.91 |
| -39 | 2423295 | 1922-08-28 | 412.93 |
| -38 | 2423708 | 1923-10-15 | 412.06 |
| -37 | 2424125 | 1924-12-05 | 410.27 |
| -36 | 2424518 | 1926-01-02 | 408.99 |
| -34 | 2425356 | 1928-04-19 | 409.83 |
| -33 | 2425768 | 1929-06-05 | 409.48 |
| -32 | 2426169 | 1930-07-11 | 409.78 |
| -31 | 2426568 | 1931-08-14 | 409.94 |
| -30 | 2426978 | 1932-09-27 | 410.36 |
| -29 | 2427394 | 1933-11-17 | 409.39 |
| -28 | 2427805 | 1935-01-02 | 409.4 |
| -27 | 2428227 | 1936-02-28 | 409.32 |
| -26 | 2428632 | 1937-04-08 | 408.36 |
| -25 | 2429039 | 1938-05-20 | 407.11 |
| -24 | 2429439 | 1939-06-24 | 406.6 |
| -23 | 2429848 | 1940-08-06 | 406.87 |
| -22 | 2430250 | 1941-09-12 | 405.91 |
| -21 | 2430646 | 1942-10-13 | 406.32 |
| -20 | 2431056 | 1943-11-27 | 406.12 |
| -19 | 2431478 | 1945-01-22 | 405.93 |
| -18 | 2431896 | 1946-03-16 | 405.04 |
| -17 | 2432276 | 1947-03-31 | 403.71 |
| -16 | 2432694 | 1948-05-22 | 402.79 |
| -15 | 2433088 | 1949-06-20 | 402.05 |
| -14 | 2433491 | 1950-07-28 | 401.83 |
| -13 | 2433886 | 1951-08-27 | 402.96 |
| -12 | 2434275 | 1952-09-19 | 404.39 |
| -11 | 2434687 | 1953-11-05 | 403.97 |
| -10 | 2435103 | 1954-12-26 | 404.61 |
| -9 | 2435514 | 1956-02-10 | 405.03 |
| -8 | 2435929 | 1957-03-31 | 405.73 |
| -7 | 2436324 | 1958-04-30 | 406.34 |
| -6 | 2436713 | 1959-05-24 | 406.72 |
| -5 | 2437122 | 1960-07-06 | 408.37 |
| -4 | 2437530 | 1961-08-18 | 410.82 |
| -3 | 2437941 | 1962-10-03 | 413.49 |
| -2 | 2438355 | 1963-11-21 | 417 |
| -1 | 2438777 | 1965-01-16 | 419.55 |
| 0 | 2439211 | 1966-03-26 | 420.89 |
| 1 | 2439634 | 1967-05-23 | 421.43 |
| 2 | 2440052 | 1968-07-14 | 422.16 |
| 3 | 2440480 | 1969-09-15 | 422.37 |
| 4 | 2440895 | 1970-11-04 | 421.66 |
| 5 | 2441316 | 1971-12-30 | 420.9 |
| 6 | 2441728 | 1973-02-14 | 419.79 |
| 7 | 2442164 | 1974-04-26 | 419.41 |
| 8 | 2442586 | 1975-06-22 | 416.78 |
| 9 | 2442998 | 1976-08-07 | 414.6 |
| 10 | 2443419 | 1977-10-02 | 412.64 |
| 11 | 2443819 | 1978-11-06 | 410.93 |
| 12 | 2444249 | 1980-01-10 | 407.98 |
| 13 | 2444621 | 1981-01-16 | 405.52 |
| 14 | 2445031 | 1982-03-02 | 403.64 |
| 15 | 2445448 | 1983-04-23 | 402.07 |
| 16 | 2445859 | 1984-06-07 | 400.99 |
| 17 | 2446246 | 1985-06-29 | 400.04 |
| 18 | 2446637 | 1986-07-25 | 400.52 |
| 19 | 2447038 | 1987-08-30 | 398.91 |
| 20 | 2447441 | 1988-10-06 | 398.43 |
| 21 | 2447835 | 1989-11-04 | 398.15 |
| 22 | 2448241 | 1990-12-15 | 399.15 |
| 23 | 2448641 | 1992-01-19 | 400.05 |
| 24 | 2449027 | 1993-02-08 | 400.41 |
| 25 | 2449441 | 1994-03-29 | 401.28 |
| 26 | 2449827 | 1995-04-19 | 402.55 |
| 27 | 2450238 | 1996-06-03 | 403.15 |
| 28 | 2450647 | 1997-07-17 | 405.14 |
| 29 | 2451046 | 1998-08-20 | 406.73 |
| 30 | 2451458 | 1999-10-06 | 408.01 |
| 31 | 2451867 | 2000-11-18 | 410.1 |
| 32 | 2452265 | 2001-12-21 | 411.56 |
| 33 | 2452694 | 2003-02-23 | 413.62 |
| 34 | 2453096 | 2004-03-31 | 416.61 |
| 35 | 2453517 | 2005-05-26 | 418.22 |
| 36 | 2453936 | 2006-07-19 | 420.86 |
| 37 | 2454358 | 2007-09-14 | 423.35 |
| 38 | 2454784 | 2008-11-13 | 425.05 |
| 39 | 2455223 | 2010-01-26 | 427.14 |
| 40 | 2455629 | 2011-03-08 | 428.71 |
| 41 | 2456074 | 2012-05-26 | 429.73 |
| 42 | 2456503 | 2013-07-29 | 430.19 |
| 43 | 2456935 | 2014-10-04 | 430.19 |
| 44 | 2457363 | 2015-12-06 | 429.76 |
| 45 | 2457803 | 2017-02-18 | 429.55 |
| 46 | 2458227 | 2018-04-18 | 427.94 |
| 47 | 2458654 | 2019-06-19 | 427.5 |
| 48 | 2459081 | 2020-08-19 | 426.83 |
| 49 | 2459505 | 2021-10-17 | 426.07 |
| 50 | 2459927 | 2022-12-13 | 424.71 |
| 51 | 2460350 | 2024-02-09 | 424.51 |
| 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. |