| E | O (JD) | O (dat) | Period |
| -76 | 2413770 | 1896-07-29 | 420.04 |
| -75 | 2414185 | 1897-09-17 | 420.01 |
| -74 | 2414620 | 1898-11-26 | 419.73 |
| -73 | 2415040 | 1900-01-20 | 421.07 |
| -71 | 2415865 | 1902-04-25 | 421.52 |
| -70 | 2416293 | 1903-06-27 | 421.72 |
| -69 | 2416712 | 1904-08-19 | 420.76 |
| -68 | 2417128 | 1905-10-09 | 419.16 |
| -67 | 2417575 | 1906-12-30 | 417.93 |
| -66 | 2417990 | 1908-02-18 | 416.69 |
| -65 | 2418410 | 1909-04-13 | 414.47 |
| -64 | 2418800 | 1910-05-08 | 412.14 |
| -63 | 2419210 | 1911-06-22 | 409.5 |
| -62 | 2419620 | 1912-08-05 | 408.94 |
| -61 | 2420036 | 1913-09-25 | 408.9 |
| -60 | 2420441 | 1914-11-04 | 408.23 |
| -59 | 2420840 | 1915-12-08 | 408.56 |
| -58 | 2421240 | 1917-01-11 | 407.78 |
| -57 | 2421692 | 1918-04-08 | 407.09 |
| -56 | 2422080 | 1919-05-01 | 406.25 |
| -55 | 2422469 | 1920-05-24 | 406.38 |
| -54 | 2422883 | 1921-07-12 | 406.66 |
| -53 | 2423285 | 1922-08-18 | 406.56 |
| -52 | 2423692 | 1923-09-29 | 406.59 |
| -51 | 2424093 | 1924-11-03 | 409.16 |
| -50 | 2424510 | 1925-12-25 | 411.16 |
| -49 | 2424922 | 1927-02-10 | 412.38 |
| -48 | 2425331 | 1928-03-25 | 413.97 |
| -47 | 2425752 | 1929-05-20 | 414.84 |
| -46 | 2426168 | 1930-07-10 | 415.14 |
| -45 | 2426585 | 1931-08-31 | 414.49 |
| -44 | 2427002 | 1932-10-21 | 414.13 |
| -43 | 2427420 | 1933-12-13 | 413.92 |
| -42 | 2427829 | 1935-01-26 | 413 |
| -41 | 2428237 | 1936-03-09 | 412.65 |
| -40 | 2428644 | 1937-04-20 | 412.27 |
| -39 | 2429060 | 1938-06-10 | 412.1 |
| -38 | 2429479 | 1939-08-03 | 412.67 |
| -37 | 2429884 | 1940-09-11 | 413.23 |
| -36 | 2430302 | 1941-11-03 | 414.06 |
| -35 | 2430712 | 1942-12-18 | 414.62 |
| -34 | 2431125 | 1944-02-04 | 414.24 |
| -32 | 2431960 | 1946-05-19 | 414.17 |
| -31 | 2432370 | 1947-07-03 | 414.21 |
| -30 | 2432794 | 1948-08-30 | 414.12 |
| -29 | 2433209 | 1949-10-19 | 414.11 |
| -28 | 2433608 | 1950-11-22 | 414.22 |
| -27 | 2434027 | 1952-01-15 | 413.49 |
| -26 | 2434437 | 1953-02-28 | 412.97 |
| -25 | 2434857 | 1954-04-24 | 412.19 |
| -24 | 2435269 | 1955-06-10 | 411.59 |
| -23 | 2435691 | 1956-08-05 | 411.28 |
| -22 | 2436090 | 1957-09-08 | 410.01 |
| -21 | 2436499 | 1958-10-22 | 408.92 |
| -20 | 2436909 | 1959-12-06 | 408.33 |
| -19 | 2437312 | 1961-01-12 | 408.05 |
| -18 | 2437724 | 1962-02-28 | 408.06 |
| -17 | 2438127 | 1963-04-07 | 408.63 |
| -16 | 2438532 | 1964-05-16 | 409.05 |
| -15 | 2438952 | 1965-07-10 | 409.63 |
| -14 | 2439358 | 1966-08-20 | 410.57 |
| -13 | 2439770 | 1967-10-06 | 411.25 |
| -12 | 2440176 | 1968-11-15 | 412.66 |
| -11 | 2440591 | 1970-01-04 | 413.41 |
| -10 | 2441004 | 1971-02-21 | 414.27 |
| -9 | 2441421 | 1972-04-13 | 415.39 |
| -8 | 2441834 | 1973-05-31 | 415.78 |
| -7 | 2442260 | 1974-07-31 | 415.98 |
| -6 | 2442669 | 1975-09-13 | 416.47 |
| -5 | 2443094 | 1976-11-11 | 416.7 |
| -4 | 2443508 | 1977-12-30 | 416.8 |
| -3 | 2443916 | 1979-02-11 | 416.67 |
| -2 | 2444329 | 1980-03-30 | 416.69 |
| -1 | 2444760 | 1981-06-04 | 417.15 |
| 0 | 2445173 | 1982-07-22 | 417.19 |
| 1 | 2445591 | 1983-09-13 | 417.63 |
| 2 | 2446003 | 1984-10-29 | 417.93 |
| 3 | 2446427 | 1985-12-27 | 418.15 |
| 4 | 2446844 | 1987-02-17 | 417.89 |
| 5 | 2447261 | 1988-04-09 | 418.31 |
| 6 | 2447678 | 1989-05-31 | 418.94 |
| 7 | 2448095 | 1990-07-22 | 419.32 |
| 8 | 2448521 | 1991-09-21 | 418.88 |
| 9 | 2448936 | 1992-11-09 | 419.08 |
| 10 | 2449355 | 1994-01-02 | 419.2 |
| 11 | 2449783 | 1995-03-06 | 419.17 |
| 12 | 2450198 | 1996-04-24 | 418.9 |
| 13 | 2450607 | 1997-06-07 | 419.03 |
| 14 | 2451033 | 1998-08-07 | 419.02 |
| 15 | 2451452 | 1999-09-30 | 418.1 |
| 16 | 2451870 | 2000-11-21 | 417.05 |
| 17 | 2452286 | 2002-01-11 | 416.25 |
| 18 | 2452716 | 2003-03-17 | 415.18 |
| 19 | 2453126 | 2004-04-30 | 413.4 |
| 20 | 2453529 | 2005-06-07 | 412.13 |
| 21 | 2453942 | 2006-07-25 | 411.15 |
| 22 | 2454351 | 2007-09-07 | 410.66 |
| 23 | 2454761 | 2008-10-21 | 410.24 |
| 24 | 2455167 | 2009-12-01 | 410.51 |
| 25 | 2455579 | 2011-01-17 | 411.25 |
| 26 | 2455992 | 2012-03-05 | 412.02 |
| 27 | 2456409 | 2013-04-26 | 412.89 |
| 28 | 2456819 | 2014-06-10 | 413.95 |
| 29 | 2457225 | 2015-07-21 | 414.7 |
| 30 | 2457645 | 2016-09-13 | 415.22 |
| 31 | 2458066 | 2017-11-08 | 415.51 |
| 32 | 2458480 | 2018-12-27 | 415.83 |
| 33 | 2458901 | 2020-02-21 | 416.6 |
| 34 | 2459312 | 2021-04-07 | 417.29 |
| 35 | 2459730 | 2022-05-30 | 416.69 |
| 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. |