| E | O (JD) | O (dat) | Period |
| -76 | 2421520 | 1917-10-18 | 225 |
| -71 | 2422640 | 1920-11-11 | 223.9 |
| -68 | 2423320 | 1922-09-22 | 221.79 |
| -67 | 2423550 | 1923-05-10 | 223.63 |
| -66 | 2423770 | 1923-12-16 | 224.83 |
| -65 | 2423984 | 1924-07-17 | 223.83 |
| -63 | 2424420 | 1925-09-26 | 223 |
| -62 | 2424666 | 1926-05-30 | 223.06 |
| -61 | 2424890 | 1927-01-09 | 222.13 |
| -60 | 2425099 | 1927-08-06 | 223.27 |
| -59 | 2425339 | 1928-04-02 | 222.79 |
| -58 | 2425550 | 1928-10-30 | 220.47 |
| -57 | 2425758 | 1929-05-26 | 221.5 |
| -56 | 2425995 | 1930-01-18 | 219.53 |
| -55 | 2426210 | 1930-08-21 | 217.28 |
| -53 | 2426653 | 1931-11-07 | 218.06 |
| -52 | 2426880 | 1932-06-21 | 217.83 |
| -50 | 2427290 | 1933-08-05 | 216.63 |
| -49 | 2427510 | 1934-03-13 | 215.2 |
| -48 | 2427723 | 1934-10-12 | 213.24 |
| -47 | 2427951 | 1935-05-28 | 213.57 |
| -45 | 2428370 | 1936-07-20 | 214 |
| -43 | 2428797 | 1937-09-20 | 212.35 |
| -41 | 2429214 | 1938-11-11 | 211.25 |
| -40 | 2429441 | 1939-06-26 | 211.26 |
| -38 | 2429853 | 1940-08-11 | 211.81 |
| -36 | 2430264 | 1941-09-26 | 211.25 |
| -35 | 2430480 | 1942-04-30 | 209.76 |
| -34 | 2430700 | 1942-12-06 | 210.17 |
| -33 | 2430915 | 1943-07-09 | 211.79 |
| -31 | 2431321 | 1944-08-18 | 212.19 |
| -29 | 2431739 | 1945-10-10 | 211.93 |
| -26 | 2432389 | 1947-07-22 | 212.76 |
| -24 | 2432811 | 1948-09-16 | 213.4 |
| -21 | 2433450 | 1950-06-17 | 213.88 |
| -19 | 2433876 | 1951-08-17 | 213.81 |
| 14 | 2440930 | 1970-12-09 | 213.7 |
| 15 | 2441152 | 1971-07-19 | 213.76 |
| 17 | 2441585 | 1972-09-24 | 213.76 |
| 19 | 2442000 | 1973-11-13 | 214.11 |
| 22 | 2442647 | 1975-08-22 | 214.47 |
| 25 | 2443280 | 1977-05-16 | 213.94 |
| 27 | 2443712 | 1978-07-22 | 214.48 |
| 29 | 2444155 | 1979-10-08 | 215.03 |
| 32 | 2444790 | 1981-07-04 | 215.69 |
| 34 | 2445221 | 1982-09-08 | 216.61 |
| 35 | 2445442 | 1983-04-17 | 215.76 |
| 36 | 2445656 | 1983-11-17 | 214.94 |
| 37 | 2445879 | 1984-06-27 | 215.87 |
| 38 | 2446095 | 1985-01-29 | 216.21 |
| 39 | 2446303 | 1985-08-25 | 215.29 |
| 40 | 2446511 | 1986-03-21 | 215.36 |
| 41 | 2446738 | 1986-11-03 | 215.07 |
| 42 | 2446952 | 1987-06-05 | 215.5 |
| 43 | 2447160 | 1987-12-30 | 216.14 |
| 44 | 2447390 | 1988-08-16 | 215.5 |
| 45 | 2447595 | 1989-03-09 | 215.71 |
| 46 | 2447820 | 1989-10-20 | 215.86 |
| 47 | 2448020 | 1990-05-08 | 215.57 |
| 48 | 2448246 | 1990-12-20 | 215.57 |
| 49 | 2448464 | 1991-07-26 | 215.64 |
| 50 | 2448670 | 1992-02-17 | 215.29 |
| 51 | 2448898 | 1992-10-02 | 215.36 |
| 52 | 2449105 | 1993-04-27 | 215 |
| 53 | 2449329 | 1993-12-07 | 214.93 |
| 54 | 2449525 | 1994-06-21 | 215.07 |
| 55 | 2449756 | 1995-02-07 | 215 |
| 56 | 2449964 | 1995-09-03 | 215.36 |
| 57 | 2450179 | 1996-04-05 | 215.86 |
| 58 | 2450400 | 1996-11-12 | 215.29 |
| 59 | 2450613 | 1997-06-13 | 214.07 |
| 60 | 2450836 | 1998-01-22 | 214.14 |
| 61 | 2451040 | 1998-08-14 | 213.5 |
| 62 | 2451255 | 1999-03-17 | 212.86 |
| 63 | 2451462 | 1999-10-10 | 212.5 |
| 64 | 2451679 | 2000-05-14 | 212.71 |
| 65 | 2451889 | 2000-12-10 | 212.79 |
| 66 | 2452104 | 2001-07-13 | 212.57 |
| 67 | 2452320 | 2002-02-14 | 212.5 |
| 68 | 2452534 | 2002-09-16 | 212.71 |
| 69 | 2452740 | 2003-04-10 | 213.5 |
| 70 | 2452953 | 2003-11-09 | 213.21 |
| 71 | 2453163 | 2004-06-06 | 212.57 |
| 72 | 2453383 | 2005-01-12 | 213.07 |
| 73 | 2453599 | 2005-08-16 | 213.93 |
| 74 | 2453810 | 2006-03-15 | 213.79 |
| 75 | 2454020 | 2006-10-11 | 213 |
| 76 | 2454237 | 2007-05-16 | 213.57 |
| 77 | 2454451 | 2007-12-16 | 214.5 |
| 78 | 2454658 | 2008-07-10 | 215 |
| 79 | 2454870 | 2009-02-07 | 215.21 |
| 80 | 2455102 | 2009-09-27 | 215.47 |
| 81 | 2455310 | 2010-04-23 | 215.76 |
| 82 | 2455530 | 2010-11-29 | 215.61 |
| 83 | 2455740 | 2011-06-27 | 214.78 |
| 85 | 2456180 | 2012-09-09 | 214.67 |
| 87 | 2456597 | 2013-10-31 | 215.28 |
| 88 | 2456812 | 2014-06-03 | 214.72 |
| 89 | 2457026 | 2015-01-03 | 213.65 |
| 90 | 2457250 | 2015-08-15 | 212.67 |
| 91 | 2457465 | 2016-03-17 | 213.57 |
| 92 | 2457670 | 2016-10-08 | 214.21 |
| 93 | 2457882 | 2017-05-08 | 212.64 |
| 94 | 2458085 | 2017-11-27 | 211.57 |
| 95 | 2458314 | 2018-07-14 | 212.29 |
| 96 | 2458523 | 2019-02-08 | 213.43 |
| 97 | 2458730 | 2019-09-03 | 214.86 |
| 98 | 2458947 | 2020-04-07 | 213.79 |
| 99 | 2459160 | 2020-11-06 | 212.21 |
| 100 | 2459380 | 2021-06-14 | 214.09 |
| 101 | 2459595 | 2022-01-15 | 214.83 |
| 102 | 2459797 | 2022-08-05 | 214.4 |
| 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. |