| E | O (JD) | O (dat) | Period |
| -57 | 2425415 | 1928-06-17 | 194.29 |
| -55 | 2425820 | 1929-07-27 | 193.93 |
| -53 | 2426210 | 1930-08-21 | 193.9 |
| -51 | 2426590 | 1931-09-05 | 193.94 |
| -47 | 2427360 | 1933-10-14 | 193.91 |
| -46 | 2427565 | 1934-05-07 | 194 |
| -40 | 2428720 | 1937-07-05 | 193.97 |
| -38 | 2429110 | 1938-07-30 | 194.42 |
| -36 | 2429500 | 1939-08-24 | 194.5 |
| -34 | 2429885 | 1940-09-12 | 194.66 |
| -32 | 2430280 | 1941-10-12 | 194.54 |
| -30 | 2430675 | 1942-11-11 | 194.79 |
| -29 | 2430884 | 1943-06-08 | 194.99 |
| -26 | 2431440 | 1944-12-15 | 194.96 |
| -25 | 2431645 | 1945-07-08 | 194.94 |
| -23 | 2432030 | 1946-07-28 | 195.06 |
| -21 | 2432420 | 1947-08-22 | 194.99 |
| -19 | 2432823 | 1948-09-28 | 195.33 |
| -17 | 2433205 | 1949-10-15 | 195.53 |
| -6 | 2435350 | 1955-08-30 | 195.49 |
| -4 | 2435750 | 1956-10-03 | 195.46 |
| 0 | 2436520 | 1958-11-12 | 195.29 |
| 18 | 2440052 | 1968-07-14 | 195.14 |
| 20 | 2440440 | 1969-08-06 | 195.09 |
| 24 | 2441220 | 1971-09-25 | 194.91 |
| 28 | 2441995 | 1973-11-08 | 194.71 |
| 33 | 2442955 | 1976-06-25 | 194.64 |
| 35 | 2443345 | 1977-07-20 | 193.92 |
| 37 | 2443734 | 1978-08-13 | 193.97 |
| 39 | 2444119 | 1979-09-02 | 193.98 |
| 41 | 2444510 | 1980-09-27 | 194.38 |
| 43 | 2444910 | 1981-11-01 | 194.99 |
| 45 | 2445290 | 1982-11-16 | 195.03 |
| 46 | 2445486 | 1983-05-31 | 195.01 |
| 48 | 2445870 | 1984-06-18 | 194.73 |
| 50 | 2446270 | 1985-07-23 | 194.57 |
| 52 | 2446664 | 1986-08-21 | 194.11 |
| 54 | 2447047 | 1987-09-08 | 194.01 |
| 58 | 2447825 | 1989-10-25 | 193.77 |
| 60 | 2448204 | 1990-11-08 | 193.52 |
| 62 | 2448600 | 1991-12-09 | 193.03 |
| 63 | 2448778 | 1992-06-04 | 192.95 |
| 64 | 2448975 | 1992-12-18 | 192.97 |
| 65 | 2449170 | 1993-07-01 | 193.35 |
| 67 | 2449557 | 1994-07-23 | 193.67 |
| 69 | 2449942 | 1995-08-12 | 193.78 |
| 71 | 2450333 | 1996-09-06 | 194.09 |
| 73 | 2450714 | 1997-09-22 | 194.26 |
| 74 | 2450923 | 1998-04-19 | 194.38 |
| 75 | 2451109 | 1998-10-22 | 194.36 |
| 76 | 2451304 | 1999-05-05 | 194.1 |
| 77 | 2451495 | 1999-11-12 | 193.4 |
| 78 | 2451700 | 2000-06-04 | 192.91 |
| 79 | 2451890 | 2000-12-11 | 192.42 |
| 80 | 2452077 | 2001-06-16 | 192.48 |
| 81 | 2452266 | 2001-12-22 | 192.79 |
| 82 | 2452455 | 2002-06-29 | 193.53 |
| 83 | 2452650 | 2003-01-10 | 193.85 |
| 84 | 2452849 | 2003-07-28 | 194.45 |
| 86 | 2453230 | 2004-08-12 | 194.85 |
| 88 | 2453626 | 2005-09-12 | 195.2 |
| 90 | 2454023 | 2006-10-14 | 195.38 |
| 91 | 2454215 | 2007-04-24 | 195.08 |
| 92 | 2454409 | 2007-11-04 | 194.99 |
| 93 | 2454601 | 2008-05-14 | 195.29 |
| 94 | 2454800 | 2008-11-29 | 194.48 |
| 95 | 2454994 | 2009-06-11 | 193.86 |
| 96 | 2455180 | 2009-12-14 | 193.56 |
| 97 | 2455382 | 2010-07-04 | 193.15 |
| 99 | 2455777 | 2011-08-03 | 192.81 |
| 101 | 2456153 | 2012-08-13 | 192.45 |
| 103 | 2456538 | 2013-09-02 | 192.36 |
| 105 | 2456922 | 2014-09-21 | 192.33 |
| 106 | 2457110 | 2015-03-28 | 191.94 |
| 107 | 2457302 | 2015-10-06 | 192.14 |
| 108 | 2457494 | 2016-04-15 | 192.78 |
| 109 | 2457690 | 2016-10-28 | 193.11 |
| 110 | 2457884 | 2017-05-10 | 193.85 |
| 111 | 2458075 | 2017-11-17 | 194.53 |
| 112 | 2458278 | 2018-06-08 | 194.87 |
| 113 | 2458465 | 2018-12-12 | 194.92 |
| 114 | 2458658 | 2019-06-23 | 194.58 |
| 115 | 2458860 | 2020-01-11 | 194.25 |
| 116 | 2459056 | 2020-07-25 | 194.18 |
| 117 | 2459250 | 2021-02-04 | 193.78 |
| 118 | 2459441 | 2021-08-14 | 194 |
| 119 | 2459630 | 2022-02-19 | 193.46 |
| 120 | 2459822 | 2022-08-30 | 192.09 |
| 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. |