| E | O (JD) | O (dat) | Period |
| -3 | 2435480 | 1956-01-07 | 179.2 |
| -2 | 2435655 | 1956-06-30 | 178.83 |
| -1 | 2435825 | 1956-12-17 | 178.4 |
| 0 | 2436008 | 1957-06-18 | 178.49 |
| 1 | 2436190 | 1957-12-17 | 178.57 |
| 2 | 2436367 | 1958-06-12 | 179.64 |
| 3 | 2436545 | 1958-12-07 | 181.29 |
| 4 | 2436730 | 1959-06-10 | 182 |
| 5 | 2436905 | 1959-12-02 | 182 |
| 6 | 2437090 | 1960-06-04 | 182.36 |
| 7 | 2437281 | 1960-12-12 | 182.29 |
| 8 | 2437465 | 1961-06-14 | 181.93 |
| 9 | 2437640 | 1961-12-06 | 183.21 |
| 10 | 2437825 | 1962-06-09 | 183.14 |
| 11 | 2438002 | 1962-12-03 | 181.64 |
| 12 | 2438180 | 1963-05-30 | 181.29 |
| 13 | 2438380 | 1963-12-16 | 182 |
| 14 | 2438555 | 1964-06-08 | 182.86 |
| 15 | 2438734 | 1964-12-04 | 182.86 |
| 16 | 2438909 | 1965-05-28 | 181 |
| 17 | 2439104 | 1965-12-09 | 180 |
| 18 | 2439283 | 1966-06-06 | 181.14 |
| 19 | 2439459 | 1966-11-29 | 182.21 |
| 20 | 2439635 | 1967-05-24 | 181.07 |
| 21 | 2439820 | 1967-11-25 | 179.88 |
| 22 | 2440005 | 1968-05-28 | 180.58 |
| 23 | 2440189 | 1968-11-28 | 180.81 |
| 25 | 2440540 | 1969-11-14 | 180.7 |
| 27 | 2440905 | 1970-11-14 | 180.16 |
| 29 | 2441268 | 1971-11-12 | 179.52 |
| 31 | 2441623 | 1972-11-01 | 180.03 |
| 33 | 2441988 | 1973-11-01 | 180.16 |
| 35 | 2442341 | 1974-10-20 | 179.75 |
| 37 | 2442700 | 1975-10-14 | 180.13 |
| 41 | 2443430 | 1977-10-13 | 180.22 |
| 43 | 2443780 | 1978-09-28 | 180.66 |
| 45 | 2444145 | 1979-09-28 | 181.53 |
| 47 | 2444510 | 1980-09-27 | 181.67 |
| 49 | 2444868 | 1981-09-20 | 181.86 |
| 51 | 2445242 | 1982-09-29 | 182.14 |
| 53 | 2445608 | 1983-09-30 | 181.96 |
| 55 | 2445972 | 1984-09-28 | 182.04 |
| 57 | 2446330 | 1985-09-21 | 181.79 |
| 59 | 2446695 | 1986-09-21 | 180.36 |
| 61 | 2447055 | 1987-09-16 | 179.5 |
| 63 | 2447420 | 1988-09-15 | 179.93 |
| 65 | 2447780 | 1989-09-10 | 179.61 |
| 67 | 2448120 | 1990-08-16 | 178.46 |
| 69 | 2448486 | 1991-08-17 | 178.29 |
| 71 | 2448854 | 1992-08-19 | 178.57 |
| 73 | 2449200 | 1993-07-31 | 179.17 |
| 75 | 2449547 | 1994-07-13 | 179.74 |
| 77 | 2449920 | 1995-07-21 | 179.29 |
| 86 | 2451530 | 1999-12-17 | 179.19 |
| 88 | 2451895 | 2000-12-16 | 179.95 |
| 90 | 2452260 | 2001-12-16 | 180.52 |
| 92 | 2452610 | 2002-12-01 | 181.15 |
| 94 | 2452970 | 2003-11-26 | 181.97 |
| 96 | 2453335 | 2004-11-25 | 181.7 |
| 100 | 2454075 | 2006-12-05 | 181.63 |
| 102 | 2454440 | 2007-12-05 | 182.2 |
| 110 | 2455900 | 2011-12-04 | 182.38 |
| 112 | 2456250 | 2012-11-18 | 181.83 |
| 113 | 2456430 | 2013-05-17 | 181.32 |
| 114 | 2456620 | 2013-11-23 | 180.65 |
| 115 | 2456798 | 2014-05-20 | 180 |
| 116 | 2456976 | 2014-11-14 | 180.29 |
| 117 | 2457160 | 2015-05-17 | 179.21 |
| 118 | 2457335 | 2015-11-08 | 178.29 |
| 119 | 2457515 | 2016-05-06 | 178.57 |
| 120 | 2457689 | 2016-10-27 | 178.86 |
| 121 | 2457870 | 2017-04-26 | 178.57 |
| 122 | 2458044 | 2017-10-17 | 178.71 |
| 123 | 2458230 | 2018-04-21 | 179.53 |
| 124 | 2458410 | 2018-10-18 | 179.06 |
| 125 | 2458585 | 2019-04-11 | 179.39 |
| 126 | 2458767 | 2019-10-10 | 180.56 |
| 128 | 2459130 | 2020-10-07 | 180.04 |
| 130 | 2459473 | 2021-09-15 | 179.86 |
| 131 | 2459670 | 2022-03-31 | 180.16 |
| 132 | 2459854 | 2022-10-01 | 179.94 |
| 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. |