| E | O (JD) | O (dat) | Period |
| -87 | 2415200 | 1900-06-29 | 335.45 |
| -86 | 2415543 | 1901-06-07 | 334.08 |
| -85 | 2415866 | 1902-04-26 | 334.26 |
| -82 | 2416886 | 1905-02-09 | 334.16 |
| -81 | 2417222 | 1906-01-11 | 333.57 |
| -80 | 2417541 | 1906-11-26 | 333.21 |
| -79 | 2417865 | 1907-10-16 | 332.08 |
| -78 | 2418215 | 1908-09-30 | 331.2 |
| -77 | 2418545 | 1909-08-26 | 329.23 |
| -76 | 2418865 | 1910-07-12 | 329.35 |
| -75 | 2419199 | 1911-06-11 | 329.97 |
| -74 | 2419519 | 1912-04-26 | 329.93 |
| -73 | 2419849 | 1913-03-22 | 329.45 |
| -72 | 2420177 | 1914-02-13 | 329.95 |
| -71 | 2420516 | 1915-01-18 | 330.43 |
| -70 | 2420850 | 1915-12-18 | 330.5 |
| -69 | 2421178 | 1916-11-10 | 330.92 |
| -68 | 2421507 | 1917-10-05 | 330.79 |
| -67 | 2421837 | 1918-08-31 | 330.62 |
| -66 | 2422165 | 1919-07-25 | 330.46 |
| -65 | 2422496 | 1920-06-20 | 330.73 |
| -64 | 2422829 | 1921-05-19 | 331.02 |
| -63 | 2423159 | 1922-04-14 | 331.2 |
| -62 | 2423490 | 1923-03-11 | 331.57 |
| -61 | 2423825 | 1924-02-09 | 331.98 |
| -60 | 2424157 | 1925-01-06 | 332.28 |
| -59 | 2424485 | 1925-11-30 | 332.81 |
| -58 | 2424816 | 1926-10-27 | 332.92 |
| -57 | 2425153 | 1927-09-29 | 333.21 |
| -56 | 2425487 | 1928-08-28 | 333.11 |
| -55 | 2425821 | 1929-07-28 | 333.46 |
| -54 | 2426160 | 1930-07-02 | 333.79 |
| -53 | 2426484 | 1931-05-22 | 333.72 |
| -52 | 2426823 | 1932-04-25 | 333.7 |
| -51 | 2427150 | 1933-03-18 | 333.5 |
| -50 | 2427490 | 1934-02-21 | 333.73 |
| -49 | 2427824 | 1935-01-21 | 333.85 |
| -48 | 2428155 | 1935-12-18 | 333.99 |
| -47 | 2428493 | 1936-11-20 | 333.6 |
| -46 | 2428820 | 1937-10-13 | 333.7 |
| -45 | 2429162 | 1938-09-20 | 334.24 |
| -44 | 2429494 | 1939-08-18 | 334.52 |
| -43 | 2429822 | 1940-07-11 | 335.13 |
| -42 | 2430154 | 1941-06-08 | 335.24 |
| -41 | 2430492 | 1942-05-12 | 335.38 |
| -40 | 2430843 | 1943-04-28 | 334.43 |
| -39 | 2431168 | 1944-03-18 | 334.04 |
| -38 | 2431510 | 1945-02-23 | 334.08 |
| -37 | 2431839 | 1946-01-18 | 333.55 |
| -36 | 2432171 | 1946-12-16 | 332.25 |
| -35 | 2432490 | 1947-10-31 | 331.62 |
| -34 | 2432826 | 1948-10-01 | 332.09 |
| -33 | 2433170 | 1949-09-10 | 332.34 |
| -32 | 2433499 | 1950-08-05 | 332.59 |
| -31 | 2433819 | 1951-06-21 | 332.95 |
| -30 | 2434161 | 1952-05-28 | 333.34 |
| -29 | 2434498 | 1953-04-30 | 333.11 |
| -28 | 2434834 | 1954-04-01 | 332.6 |
| -27 | 2435157 | 1955-02-18 | 332.89 |
| -26 | 2435494 | 1956-01-21 | 333.32 |
| -25 | 2435827 | 1956-12-19 | 333.07 |
| -24 | 2436162 | 1957-11-19 | 332.91 |
| -23 | 2436487 | 1958-10-10 | 332.92 |
| -22 | 2436824 | 1959-09-12 | 332.91 |
| -21 | 2437163 | 1960-08-16 | 332.52 |
| -20 | 2437497 | 1961-07-16 | 332.18 |
| -19 | 2437824 | 1962-06-08 | 331.12 |
| -18 | 2438156 | 1963-05-06 | 331.24 |
| -17 | 2438484 | 1964-03-29 | 331.12 |
| -16 | 2438818 | 1965-02-26 | 330.78 |
| -15 | 2439147 | 1966-01-21 | 330.78 |
| -14 | 2439462 | 1966-12-02 | 331.47 |
| -13 | 2439813 | 1967-11-18 | 331.95 |
| -12 | 2440148 | 1968-10-18 | 332.25 |
| -11 | 2440471 | 1969-09-06 | 332.37 |
| -10 | 2440801 | 1970-08-02 | 332.98 |
| -9 | 2441143 | 1971-07-10 | 333.06 |
| -8 | 2441475 | 1972-06-06 | 332.16 |
| -7 | 2441803 | 1973-04-30 | 332.33 |
| -6 | 2442135 | 1974-03-28 | 332.64 |
| -5 | 2442475 | 1975-03-03 | 332.6 |
| -4 | 2442800 | 1976-01-22 | 332.4 |
| -3 | 2443131 | 1976-12-18 | 332.48 |
| -2 | 2443467 | 1977-11-19 | 332.42 |
| -1 | 2443799 | 1978-10-17 | 332.43 |
| 0 | 2444134 | 1979-09-17 | 332.36 |
| 1 | 2444467 | 1980-08-15 | 332.35 |
| 2 | 2444796 | 1981-07-10 | 332.55 |
| 3 | 2445125 | 1982-06-04 | 332.1 |
| 4 | 2445463 | 1983-05-08 | 332.07 |
| 5 | 2445795 | 1984-04-04 | 332.06 |
| 6 | 2446120 | 1985-02-23 | 332.41 |
| 7 | 2446464 | 1986-02-02 | 332.53 |
| 8 | 2446785 | 1986-12-20 | 332.39 |
| 9 | 2447122 | 1987-11-22 | 332.54 |
| 10 | 2447455 | 1988-10-20 | 333.11 |
| 11 | 2447792 | 1989-09-22 | 333.38 |
| 12 | 2448119 | 1990-08-15 | 332.65 |
| 13 | 2448449 | 1991-07-11 | 332.57 |
| 14 | 2448791 | 1992-06-17 | 332.51 |
| 15 | 2449128 | 1993-05-20 | 332.75 |
| 16 | 2449456 | 1994-04-13 | 332.69 |
| 17 | 2449776 | 1995-02-27 | 332.27 |
| 18 | 2450109 | 1996-01-26 | 332.38 |
| 19 | 2450453 | 1997-01-04 | 332.31 |
| 20 | 2450789 | 1997-12-06 | 332.5 |
| 21 | 2451116 | 1998-10-29 | 333.07 |
| 22 | 2451436 | 1999-09-14 | 333.46 |
| 23 | 2451784 | 2000-08-27 | 333.33 |
| 24 | 2452117 | 2001-07-26 | 332.82 |
| 25 | 2452446 | 2002-06-20 | 332.68 |
| 26 | 2452781 | 2003-05-21 | 333.07 |
| 27 | 2453114 | 2004-04-18 | 333.15 |
| 28 | 2453450 | 2005-03-20 | 332.77 |
| 29 | 2453777 | 2006-02-10 | 332.88 |
| 30 | 2454106 | 2007-01-05 | 333.2 |
| 31 | 2454445 | 2007-12-10 | 333.56 |
| 32 | 2454777 | 2008-11-06 | 333.71 |
| 33 | 2455115 | 2009-10-10 | 333.82 |
| 34 | 2455444 | 2010-09-04 | 334.74 |
| 35 | 2455781 | 2011-08-07 | 335.32 |
| 36 | 2456120 | 2012-07-11 | 334.95 |
| 37 | 2456448 | 2013-06-04 | 335.12 |
| 38 | 2456781 | 2014-05-03 | 335.14 |
| 39 | 2457129 | 2015-04-16 | 335.45 |
| 40 | 2457465 | 2016-03-17 | 335.15 |
| 41 | 2457787 | 2017-02-02 | 334.76 |
| 42 | 2458128 | 2018-01-09 | 334.33 |
| 43 | 2458463 | 2018-12-10 | 333.93 |
| 44 | 2458801 | 2019-11-13 | 333.12 |
| 45 | 2459130 | 2020-10-07 | 333.12 |
| 46 | 2459461 | 2021-09-03 | 333.54 |
| 47 | 2459789 | 2022-07-28 | 332.23 |
| 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. |