| E | O (JD) | O (dat) | Period |
| -95 | 2425430 | 1928-07-02 | 160.92 |
| -93 | 2425747 | 1929-05-15 | 158.72 |
| -91 | 2426057 | 1930-03-21 | 157.13 |
| -90 | 2426215 | 1930-08-26 | 157.35 |
| -86 | 2426868 | 1932-06-09 | 157.21 |
| -84 | 2427158 | 1933-03-26 | 157.47 |
| -81 | 2427640 | 1934-07-21 | 157.91 |
| -74 | 2428730 | 1937-07-15 | 158 |
| -72 | 2429050 | 1938-05-31 | 158.34 |
| -67 | 2429840 | 1940-07-29 | 158.52 |
| -58 | 2431275 | 1944-07-03 | 158.55 |
| -44 | 2433500 | 1950-08-06 | 158.65 |
| -5 | 2439685 | 1967-07-13 | 158.62 |
| -3 | 2440000 | 1968-05-23 | 158.51 |
| 0 | 2440470 | 1969-09-05 | 158.32 |
| 2 | 2440790 | 1970-07-22 | 157.98 |
| 4 | 2441100 | 1971-05-28 | 158.38 |
| 5 | 2441255 | 1971-10-30 | 158.32 |
| 6 | 2441410 | 1972-04-02 | 157.25 |
| 7 | 2441570 | 1972-09-09 | 158.14 |
| 11 | 2442233 | 1974-07-04 | 158.62 |
| 14 | 2442670 | 1975-09-14 | 158.17 |
| 16 | 2442993 | 1976-08-02 | 158.23 |
| 18 | 2443325 | 1977-06-30 | 157.73 |
| 20 | 2443630 | 1978-05-01 | 158.34 |
| 21 | 2443780 | 1978-09-28 | 159.55 |
| 23 | 2444105 | 1979-08-19 | 159.07 |
| 25 | 2444430 | 1980-07-09 | 159 |
| 29 | 2445065 | 1982-04-05 | 159.83 |
| 30 | 2445225 | 1982-09-12 | 160.34 |
| 32 | 2445547 | 1983-07-31 | 160.5 |
| 34 | 2445860 | 1984-06-08 | 161.58 |
| 36 | 2446185 | 1985-04-29 | 162.44 |
| 37 | 2446350 | 1985-10-11 | 162.14 |
| 39 | 2446679 | 1986-09-05 | 162.64 |
| 41 | 2447017 | 1987-08-09 | 163.14 |
| 45 | 2447659 | 1989-05-12 | 162.97 |
| 46 | 2447815 | 1989-10-15 | 162.67 |
| 48 | 2448146 | 1990-09-11 | 161.48 |
| 50 | 2448467 | 1991-07-29 | 160.54 |
| 52 | 2448794 | 1992-06-20 | 161.08 |
| 54 | 2449115 | 1993-05-07 | 160.85 |
| 55 | 2449264 | 1993-10-03 | 160.08 |
| 57 | 2449586 | 1994-08-21 | 159.39 |
| 59 | 2449915 | 1995-07-16 | 159.19 |
| 61 | 2450228 | 1996-05-24 | 160.05 |
| 62 | 2450387 | 1996-10-30 | 159.95 |
| 63 | 2450540 | 1997-04-01 | 158.67 |
| 64 | 2450712 | 1997-09-20 | 158.61 |
| 65 | 2450868 | 1998-02-23 | 158.89 |
| 66 | 2451021 | 1998-07-26 | 159.21 |
| 68 | 2451336 | 1999-06-06 | 158.9 |
| 70 | 2451662 | 2000-04-27 | 158.13 |
| 71 | 2451813 | 2000-09-25 | 158.58 |
| 73 | 2452139 | 2001-08-17 | 158.62 |
| 75 | 2452450 | 2002-06-24 | 158.42 |
| 77 | 2452767 | 2003-05-07 | 158.48 |
| 78 | 2452928 | 2003-10-15 | 158.41 |
| 80 | 2453236 | 2004-08-18 | 158.25 |
| 82 | 2453564 | 2005-07-12 | 157.75 |
| 86 | 2454190 | 2007-03-30 | 157.39 |
| 87 | 2454356 | 2007-09-12 | 157.7 |
| 89 | 2454664 | 2008-07-16 | 157.48 |
| 91 | 2454970 | 2009-05-18 | 157.05 |
| 92 | 2455132 | 2009-10-27 | 156.56 |
| 93 | 2455290 | 2010-04-03 | 156.83 |
| 94 | 2455447 | 2010-09-07 | 158.33 |
| 95 | 2455605 | 2011-02-12 | 158.78 |
| 96 | 2455759 | 2011-07-16 | 158.79 |
| 98 | 2456084 | 2012-06-05 | 159.1 |
| 100 | 2456400 | 2013-04-17 | 159.3 |
| 101 | 2456560 | 2013-09-24 | 159.7 |
| 103 | 2456879 | 2014-08-09 | 159.74 |
| 104 | 2457040 | 2015-01-17 | 159.65 |
| 105 | 2457198 | 2015-06-24 | 159.62 |
| 106 | 2457360 | 2015-12-03 | 159.2 |
| 107 | 2457518 | 2016-05-09 | 159.21 |
| 108 | 2457680 | 2016-10-18 | 159.21 |
| 109 | 2457834 | 2017-03-21 | 158.57 |
| 110 | 2457993 | 2017-08-27 | 158.43 |
| 111 | 2458155 | 2018-02-05 | 158.71 |
| 112 | 2458312 | 2018-07-12 | 159 |
| 113 | 2458466 | 2018-12-13 | 158.93 |
| 114 | 2458630 | 2019-05-26 | 158.14 |
| 115 | 2458790 | 2019-11-02 | 157.5 |
| 116 | 2458950 | 2020-04-10 | 157.79 |
| 117 | 2459102 | 2020-09-09 | 157.71 |
| 118 | 2459260 | 2021-02-14 | 157.07 |
| 119 | 2459412 | 2021-07-16 | 156.63 |
| 120 | 2459575 | 2021-12-26 | 156.34 |
| 121 | 2459729 | 2022-05-29 | 156.83 |
| 122 | 2459890 | 2022-11-06 | 156.6 |
| 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. |