| E | O (JD) | O (dat) | Period |
| -28 | 2427540 | 1934-04-12 | 213.77 |
| -26 | 2427988 | 1935-07-04 | 214.16 |
| -23 | 2428620 | 1937-03-27 | 214.28 |
| -21 | 2429049 | 1938-05-30 | 214.51 |
| -19 | 2429475 | 1939-07-30 | 214 |
| -14 | 2430550 | 1942-07-09 | 213.22 |
| -11 | 2431190 | 1944-04-09 | 213.26 |
| -9 | 2431620 | 1945-06-13 | 213.29 |
| -7 | 2432040 | 1946-08-07 | 212.43 |
| -1 | 2433310 | 1950-01-28 | 212.14 |
| 0 | 2433529 | 1950-09-04 | 212.23 |
| 1 | 2433740 | 1951-04-03 | 212.34 |
| 29 | 2439668 | 1967-06-26 | 212.49 |
| 34 | 2440740 | 1970-06-02 | 212.44 |
| 36 | 2441171 | 1971-08-07 | 212.31 |
| 38 | 2441600 | 1972-10-09 | 212.43 |
| 41 | 2442237 | 1974-07-08 | 212.81 |
| 43 | 2442659 | 1975-09-03 | 212.61 |
| 44 | 2442869 | 1976-03-31 | 212.7 |
| 46 | 2443285 | 1977-05-21 | 212.52 |
| 48 | 2443720 | 1978-07-30 | 212.63 |
| 50 | 2444144 | 1979-09-27 | 213.58 |
| 51 | 2444370 | 1980-05-10 | 214 |
| 53 | 2444780 | 1981-06-24 | 213.88 |
| 55 | 2445219 | 1982-09-06 | 213.96 |
| 56 | 2445435 | 1983-04-10 | 213.37 |
| 58 | 2445855 | 1984-06-03 | 213.04 |
| 60 | 2446283 | 1985-08-05 | 213.37 |
| 63 | 2446930 | 1987-05-14 | 213.31 |
| 65 | 2447345 | 1988-07-02 | 213.28 |
| 67 | 2447770 | 1989-08-31 | 212.88 |
| 68 | 2447990 | 1990-04-08 | 212.48 |
| 69 | 2448210 | 1990-11-14 | 212.86 |
| 70 | 2448412 | 1991-06-04 | 213.45 |
| 72 | 2448835 | 1992-07-31 | 212.76 |
| 74 | 2449265 | 1993-10-04 | 212.27 |
| 75 | 2449480 | 1994-05-07 | 212.27 |
| 77 | 2449904 | 1995-07-05 | 212.67 |
| 79 | 2450324 | 1996-08-28 | 212.7 |
| 80 | 2450546 | 1997-04-07 | 211.6 |
| 81 | 2450746 | 1997-10-24 | 211.47 |
| 82 | 2450967 | 1998-06-02 | 212.88 |
| 84 | 2451387 | 1999-07-27 | 212.19 |
| 85 | 2451590 | 2000-02-15 | 210.87 |
| 86 | 2451812 | 2000-09-24 | 210.81 |
| 87 | 2452035 | 2001-05-05 | 210.2 |
| 88 | 2452230 | 2001-11-16 | 210.71 |
| 89 | 2452436 | 2002-06-10 | 210.79 |
| 90 | 2452650 | 2003-01-10 | 209.57 |
| 91 | 2452857 | 2003-08-05 | 210.4 |
| 92 | 2453070 | 2004-03-05 | 211.82 |
| 93 | 2453283 | 2004-10-04 | 211.33 |
| 94 | 2453498 | 2005-05-07 | 210.89 |
| 96 | 2453923 | 2006-07-06 | 211.11 |
| 98 | 2454344 | 2007-08-31 | 210.89 |
| 99 | 2454546 | 2008-03-20 | 210.57 |
| 100 | 2454757 | 2008-10-17 | 210.24 |
| 101 | 2454970 | 2009-05-18 | 209.53 |
| 103 | 2455390 | 2010-07-12 | 209.56 |
| 105 | 2455813 | 2011-09-08 | 210.22 |
| 106 | 2456023 | 2012-04-05 | 210.5 |
| 107 | 2456225 | 2012-10-24 | 209.76 |
| 108 | 2456437 | 2013-05-24 | 209.2 |
| 109 | 2456650 | 2013-12-23 | 209.86 |
| 110 | 2456866 | 2014-07-27 | 211.07 |
| 111 | 2457060 | 2015-02-06 | 211.93 |
| 112 | 2457281 | 2015-09-15 | 211.93 |
| 113 | 2457493 | 2016-04-14 | 211.07 |
| 114 | 2457710 | 2016-11-17 | 211.36 |
| 115 | 2457919 | 2017-06-14 | 212.36 |
| 116 | 2458135 | 2018-01-16 | 211.93 |
| 117 | 2458336 | 2018-08-05 | 212.36 |
| 118 | 2458549 | 2019-03-06 | 212.5 |
| 119 | 2458765 | 2019-10-08 | 212.21 |
| 120 | 2458976 | 2020-05-06 | 212.71 |
| 121 | 2459200 | 2020-12-16 | 213.52 |
| 122 | 2459404 | 2021-07-08 | 213.94 |
| 123 | 2459621 | 2022-02-10 | 214.25 |
| 124 | 2459828 | 2022-09-05 | 214.9 |
| 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. |