| E | O (JD) | O (dat) | Period |
| -78 | 2423500 | 1923-03-21 | 217.84 |
| -71 | 2425000 | 1927-04-29 | 217.56 |
| -69 | 2425460 | 1928-08-01 | 218.07 |
| -63 | 2426780 | 1932-03-13 | 218.45 |
| -61 | 2427200 | 1933-05-07 | 218.53 |
| -59 | 2427630 | 1934-07-11 | 218.43 |
| -56 | 2428300 | 1936-05-11 | 217.43 |
| -53 | 2428956 | 1938-02-26 | 216.82 |
| -51 | 2429378 | 1939-04-24 | 217.15 |
| -49 | 2429819 | 1940-07-08 | 216.75 |
| -46 | 2430466 | 1942-04-16 | 215.93 |
| -39 | 2431970 | 1946-05-29 | 215.77 |
| -34 | 2433066 | 1949-05-29 | 215.82 |
| -22 | 2435652 | 1956-06-27 | 215.72 |
| -3 | 2439742 | 1967-09-08 | 215.67 |
| -2 | 2439953 | 1968-04-06 | 215.55 |
| 0 | 2440394 | 1969-06-21 | 215.22 |
| 2 | 2440816 | 1970-08-17 | 214.57 |
| 3 | 2441030 | 1971-03-19 | 213.62 |
| 4 | 2441250 | 1971-10-25 | 213.24 |
| 5 | 2441457 | 1972-05-19 | 212.45 |
| 7 | 2441876 | 1973-07-12 | 211.9 |
| 9 | 2442305 | 1974-09-14 | 211.12 |
| 10 | 2442520 | 1975-04-17 | 211.04 |
| 12 | 2442939 | 1976-06-09 | 211.57 |
| 14 | 2443357 | 1977-08-01 | 211.78 |
| 17 | 2443990 | 1979-04-26 | 211.42 |
| 19 | 2444415 | 1980-06-24 | 211.28 |
| 21 | 2444842 | 1981-08-25 | 211.65 |
| 22 | 2445057 | 1982-03-28 | 212.45 |
| 23 | 2445265 | 1982-10-22 | 213.61 |
| 24 | 2445476 | 1983-05-21 | 214 |
| 25 | 2445688 | 1983-12-19 | 214 |
| 26 | 2445908 | 1984-07-26 | 214.19 |
| 28 | 2446342 | 1985-10-03 | 214.24 |
| 29 | 2446553 | 1986-05-02 | 214.69 |
| 30 | 2446770 | 1986-12-05 | 215.5 |
| 31 | 2446979 | 1987-07-02 | 215.8 |
| 32 | 2447190 | 1988-01-29 | 215.57 |
| 33 | 2447409 | 1988-09-04 | 214 |
| 34 | 2447635 | 1989-04-18 | 213 |
| 35 | 2447852 | 1989-11-21 | 213.75 |
| 36 | 2448061 | 1990-06-18 | 213.81 |
| 38 | 2448472 | 1991-08-03 | 212.41 |
| 39 | 2448685 | 1992-03-03 | 211.26 |
| 40 | 2448904 | 1992-10-08 | 211.2 |
| 41 | 2449116 | 1993-05-08 | 212.21 |
| 43 | 2449539 | 1994-07-05 | 213.55 |
| 45 | 2449962 | 1995-09-01 | 213.89 |
| 46 | 2450175 | 1996-04-01 | 213 |
| 47 | 2450390 | 1996-11-02 | 212.47 |
| 48 | 2450611 | 1997-06-11 | 213.19 |
| 49 | 2450828 | 1998-01-14 | 212.72 |
| 50 | 2451026 | 1998-07-31 | 211.74 |
| 51 | 2451241 | 1999-03-03 | 210.81 |
| 52 | 2451458 | 1999-10-06 | 209.74 |
| 53 | 2451657 | 2000-04-22 | 210.44 |
| 55 | 2452084 | 2001-06-23 | 211.13 |
| 56 | 2452290 | 2002-01-15 | 210.44 |
| 57 | 2452505 | 2002-08-18 | 210.88 |
| 58 | 2452716 | 2003-03-17 | 211.59 |
| 59 | 2452929 | 2003-10-16 | 211.69 |
| 60 | 2453137 | 2004-05-11 | 211.88 |
| 62 | 2453563 | 2005-07-11 | 211.64 |
| 63 | 2453775 | 2006-02-08 | 211.84 |
| 64 | 2453986 | 2006-09-07 | 212.2 |
| 65 | 2454199 | 2007-04-08 | 212.11 |
| 67 | 2454620 | 2008-06-02 | 212.05 |
| 69 | 2455050 | 2009-08-06 | 212.15 |
| 70 | 2455260 | 2010-03-04 | 212.05 |
| 71 | 2455470 | 2010-09-30 | 211.52 |
| 72 | 2455685 | 2011-05-03 | 211.15 |
| 74 | 2456107 | 2012-06-28 | 210.86 |
| 76 | 2456531 | 2013-08-26 | 210.68 |
| 77 | 2456730 | 2014-03-13 | 210.91 |
| 79 | 2457163 | 2015-05-20 | 210.81 |
| 81 | 2457575 | 2016-07-05 | 210.47 |
| 82 | 2457790 | 2017-02-05 | 210.61 |
| 83 | 2458005 | 2017-09-08 | 210.41 |
| 84 | 2458214 | 2018-04-05 | 210.47 |
| 85 | 2458423 | 2018-10-31 | 210.58 |
| 86 | 2458629 | 2019-05-25 | 209.93 |
| 87 | 2458841 | 2019-12-23 | 210.21 |
| 88 | 2459054 | 2020-07-23 | 210.35 |
| 89 | 2459259 | 2021-02-13 | 210.62 |
| 90 | 2459475 | 2021-09-17 | 211.15 |
| 91 | 2459687 | 2022-04-17 | 210.5 |
| 92 | 2459895 | 2022-11-11 | 209.98 |
| 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. |