| E | O (JD) | O (dat) | Period |
| -77 | 2415810 | 1902-03-01 | 292.4 |
| -76 | 2416115 | 1902-12-31 | 292.26 |
| -72 | 2417295 | 1906-03-25 | 291.68 |
| -70 | 2417882 | 1907-11-02 | 291.67 |
| -69 | 2418154 | 1908-07-31 | 291.91 |
| -68 | 2418438 | 1909-05-11 | 292.09 |
| -66 | 2419034 | 1910-12-28 | 291.5 |
| -62 | 2420192 | 1914-02-28 | 291.31 |
| -61 | 2420490 | 1914-12-23 | 291.89 |
| -60 | 2420791 | 1915-10-20 | 292.69 |
| -59 | 2421085 | 1916-08-09 | 292.77 |
| -58 | 2421360 | 1917-05-11 | 292.74 |
| -57 | 2421658 | 1918-03-05 | 293.75 |
| -56 | 2421960 | 1919-01-01 | 292.82 |
| -55 | 2422251 | 1919-10-19 | 291.68 |
| -54 | 2422538 | 1920-08-01 | 291.29 |
| -53 | 2422840 | 1921-05-30 | 291.15 |
| -52 | 2423140 | 1922-03-26 | 290.97 |
| -51 | 2423410 | 1922-12-21 | 290.82 |
| -46 | 2424865 | 1926-12-15 | 290.95 |
| -42 | 2426030 | 1930-02-22 | 291.07 |
| -41 | 2426320 | 1930-12-09 | 291.23 |
| -40 | 2426620 | 1931-10-05 | 291.72 |
| -37 | 2427490 | 1934-02-21 | 292.61 |
| -36 | 2427787 | 1934-12-15 | 292.7 |
| -35 | 2428080 | 1935-10-04 | 292.34 |
| -32 | 2428961 | 1938-03-03 | 291.7 |
| -31 | 2429260 | 1938-12-27 | 290.86 |
| -30 | 2429553 | 1939-10-16 | 289.97 |
| -27 | 2430412 | 1942-02-21 | 289.15 |
| -26 | 2430697 | 1942-12-03 | 288.68 |
| -22 | 2431860 | 1946-02-08 | 292.26 |
| -21 | 2432140 | 1946-11-15 | 292.86 |
| -18 | 2433000 | 1949-03-24 | 293.19 |
| -17 | 2433285 | 1950-01-03 | 293.46 |
| -16 | 2433582 | 1950-10-27 | 293.62 |
| 13 | 2442129 | 1974-03-22 | 293.81 |
| 14 | 2442422 | 1975-01-09 | 293.97 |
| 15 | 2442711 | 1975-10-25 | 294.01 |
| 17 | 2443290 | 1977-05-26 | 293.97 |
| 18 | 2443580 | 1978-03-12 | 293.65 |
| 19 | 2443875 | 1979-01-01 | 290.24 |
| 20 | 2444165 | 1979-10-18 | 289.72 |
| 22 | 2444731 | 1981-05-06 | 289.36 |
| 23 | 2445040 | 1982-03-11 | 289.1 |
| 24 | 2445324 | 1982-12-20 | 289.03 |
| 25 | 2445612 | 1983-10-04 | 288.5 |
| 26 | 2445890 | 1984-07-08 | 287.86 |
| 27 | 2446180 | 1985-04-24 | 287.82 |
| 28 | 2446473 | 1986-02-11 | 287.67 |
| 29 | 2446767 | 1986-12-02 | 288.15 |
| 30 | 2447045 | 1987-09-06 | 288.89 |
| 32 | 2447614 | 1989-03-28 | 289.93 |
| 33 | 2447912 | 1990-01-20 | 290.72 |
| 34 | 2448208 | 1990-11-12 | 291.48 |
| 37 | 2449068 | 1993-03-21 | 292.61 |
| 38 | 2449369 | 1994-01-16 | 293.61 |
| 39 | 2449672 | 1994-11-15 | 295.07 |
| 40 | 2449971 | 1995-09-10 | 295.17 |
| 42 | 2450555 | 1997-04-16 | 295.5 |
| 43 | 2450859 | 1998-02-14 | 295.67 |
| 44 | 2451144 | 1998-11-26 | 294.77 |
| 45 | 2451463 | 1999-10-11 | 294.31 |
| 47 | 2452033 | 2001-05-03 | 294.3 |
| 48 | 2452329 | 2002-02-23 | 294.38 |
| 49 | 2452613 | 2002-12-04 | 293.91 |
| 50 | 2452908 | 2003-09-25 | 293.9 |
| 51 | 2453210 | 2004-07-23 | 293.61 |
| 52 | 2453510 | 2005-05-19 | 293.85 |
| 53 | 2453803 | 2006-03-08 | 293.72 |
| 54 | 2454090 | 2006-12-20 | 293.85 |
| 55 | 2454385 | 2007-10-11 | 293.88 |
| 58 | 2455270 | 2010-03-14 | 293.94 |
| 59 | 2455550 | 2010-12-19 | 294.21 |
| 60 | 2455850 | 2011-10-15 | 295 |
| 63 | 2456735 | 2014-03-18 | 295.68 |
| 64 | 2457036 | 2015-01-13 | 296.23 |
| 65 | 2457333 | 2015-11-06 | 297.07 |
| 66 | 2457630 | 2016-08-29 | 297.98 |
| 68 | 2458231 | 2018-04-22 | 297.4 |
| 69 | 2458525 | 2019-02-10 | 297.58 |
| 70 | 2458823 | 2019-12-05 | 297.33 |
| 71 | 2459124 | 2020-10-01 | 297.18 |
| 72 | 2459427 | 2021-07-31 | 296.77 |
| 73 | 2459698 | 2022-04-28 | 295.49 |
| 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. |