| E | O (JD) | O (dat) | Period |
| -102 | 2411670 | 1890-10-29 | 263.15 |
| -98 | 2412700 | 1893-08-24 | 262.69 |
| -97 | 2412965 | 1894-05-16 | 262.58 |
| -94 | 2413750 | 1896-07-09 | 262.38 |
| -91 | 2414560 | 1898-09-27 | 262.16 |
| -86 | 2415870 | 1902-04-30 | 262.3 |
| -84 | 2416380 | 1903-09-22 | 262.52 |
| -83 | 2416645 | 1904-06-13 | 262.44 |
| -77 | 2418215 | 1908-09-30 | 262.3 |
| -76 | 2418470 | 1909-06-12 | 261.88 |
| -75 | 2418750 | 1910-03-19 | 262.06 |
| -73 | 2419270 | 1911-08-21 | 262.26 |
| -70 | 2420060 | 1913-10-19 | 262.08 |
| -69 | 2420320 | 1914-07-06 | 262.44 |
| -68 | 2420575 | 1915-03-18 | 262.92 |
| -66 | 2421100 | 1916-08-24 | 262.67 |
| -65 | 2421360 | 1917-05-11 | 263.17 |
| -56 | 2423720 | 1923-10-27 | 263.58 |
| -55 | 2424000 | 1924-08-02 | 263.83 |
| -54 | 2424279 | 1925-05-08 | 264.38 |
| -52 | 2424780 | 1926-09-21 | 264.46 |
| -50 | 2425330 | 1928-03-24 | 264.34 |
| -48 | 2425860 | 1929-09-05 | 264.28 |
| -47 | 2426115 | 1930-05-18 | 263.52 |
| -44 | 2426925 | 1932-08-05 | 263.15 |
| -43 | 2427169 | 1933-04-06 | 263.15 |
| -41 | 2427688 | 1934-09-07 | 262.42 |
| -40 | 2427958 | 1935-06-04 | 262.5 |
| -37 | 2428745 | 1937-07-30 | 262.64 |
| -36 | 2429007 | 1938-04-18 | 262.61 |
| -34 | 2429531 | 1939-09-24 | 263.17 |
| -33 | 2429795 | 1940-06-14 | 263.21 |
| -30 | 2430589 | 1942-08-17 | 262.86 |
| -29 | 2430850 | 1943-05-05 | 262.78 |
| -26 | 2431640 | 1945-07-03 | 262.06 |
| -23 | 2432430 | 1947-09-01 | 261.66 |
| -22 | 2432690 | 1948-05-18 | 261.29 |
| -19 | 2433470 | 1950-07-07 | 261.08 |
| -18 | 2433735 | 1951-03-29 | 260.92 |
| 0 | 2438439 | 1964-02-13 | 260.81 |
| 6 | 2440000 | 1968-05-23 | 260.77 |
| 9 | 2440770 | 1970-07-02 | 260.68 |
| 15 | 2442340 | 1974-10-19 | 260.56 |
| 16 | 2442593 | 1975-06-29 | 260.38 |
| 17 | 2442860 | 1976-03-22 | 259.77 |
| 19 | 2443385 | 1977-08-29 | 259.79 |
| 20 | 2443631 | 1978-05-02 | 260.17 |
| 22 | 2444150 | 1979-10-03 | 259.6 |
| 23 | 2444415 | 1980-06-24 | 259.56 |
| 25 | 2444930 | 1981-11-21 | 258.89 |
| 26 | 2445195 | 1982-08-13 | 259.17 |
| 27 | 2445465 | 1983-05-10 | 259.26 |
| 29 | 2445967 | 1984-09-23 | 259.21 |
| 30 | 2446229 | 1985-06-12 | 259.08 |
| 31 | 2446475 | 1986-02-13 | 259.42 |
| 32 | 2446755 | 1986-11-20 | 259.37 |
| 33 | 2447000 | 1987-07-23 | 259.85 |
| 34 | 2447270 | 1988-04-18 | 260.47 |
| 36 | 2447787 | 1989-09-17 | 260.83 |
| 37 | 2448053 | 1990-06-10 | 261.38 |
| 40 | 2448826 | 1992-07-22 | 261.36 |
| 41 | 2449095 | 1993-04-17 | 262.05 |
| 43 | 2449610 | 1994-09-14 | 261.94 |
| 44 | 2449882 | 1995-06-13 | 262.47 |
| 45 | 2450150 | 1996-03-07 | 262.66 |
| 46 | 2450410 | 1996-11-22 | 263.04 |
| 47 | 2450677 | 1997-08-16 | 262.85 |
| 48 | 2450929 | 1998-04-25 | 262.5 |
| 49 | 2451200 | 1999-01-21 | 262.16 |
| 50 | 2451459 | 1999-10-07 | 261.6 |
| 51 | 2451717 | 2000-06-21 | 261.01 |
| 53 | 2452248 | 2001-12-04 | 260.88 |
| 54 | 2452501 | 2002-08-14 | 261.08 |
| 55 | 2452773 | 2003-05-13 | 260.64 |
| 57 | 2453284 | 2004-10-05 | 260.36 |
| 58 | 2453536 | 2005-06-14 | 260.27 |
| 60 | 2454068 | 2006-11-28 | 260 |
| 61 | 2454333 | 2007-08-20 | 260.39 |
| 62 | 2454585 | 2008-04-28 | 260.45 |
| 63 | 2454840 | 2009-01-08 | 261.08 |
| 64 | 2455107 | 2009-10-02 | 261.28 |
| 65 | 2455367 | 2010-06-19 | 260.79 |
| 66 | 2455634 | 2011-03-13 | 260.87 |
| 67 | 2455894 | 2011-11-28 | 261.05 |
| 68 | 2456153 | 2012-08-13 | 261.02 |
| 69 | 2456415 | 2013-05-02 | 261.23 |
| 71 | 2456933 | 2014-10-02 | 261.1 |
| 72 | 2457195 | 2015-06-21 | 261.18 |
| 73 | 2457453 | 2016-03-05 | 261.49 |
| 74 | 2457717 | 2016-11-24 | 261.87 |
| 75 | 2457991 | 2017-08-25 | 262.34 |
| 76 | 2458240 | 2018-05-01 | 262.38 |
| 77 | 2458508 | 2019-01-24 | 262.02 |
| 78 | 2458769 | 2019-10-12 | 261.96 |
| 79 | 2459033 | 2020-07-02 | 261.53 |
| 80 | 2459299 | 2021-03-25 | 260.95 |
| 81 | 2459550 | 2021-12-01 | 261.57 |
| 82 | 2459810 | 2022-08-18 | 260.54 |
| 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. |