| E | O (JD) | O (dat) | Period |
| -131 | 2413180 | 1894-12-17 | 307 |
| -129 | 2413760 | 1896-07-19 | 306.43 |
| -128 | 2414080 | 1897-06-04 | 306.31 |
| -127 | 2414375 | 1898-03-26 | 305.29 |
| -125 | 2415000 | 1899-12-11 | 305.71 |
| -122 | 2415915 | 1902-06-14 | 305.45 |
| -121 | 2416225 | 1903-04-20 | 304.79 |
| -120 | 2416530 | 1904-02-19 | 304.57 |
| -119 | 2416830 | 1904-12-15 | 303.75 |
| -116 | 2417730 | 1907-06-03 | 303.5 |
| -115 | 2418040 | 1908-04-08 | 303.41 |
| -114 | 2418340 | 1909-02-02 | 303.27 |
| -113 | 2418650 | 1909-12-09 | 303.21 |
| -110 | 2419560 | 1912-06-06 | 303.17 |
| -109 | 2419870 | 1913-04-12 | 302.79 |
| -104 | 2421375 | 1917-05-26 | 302.35 |
| -103 | 2421675 | 1918-03-22 | 301.32 |
| -98 | 2423190 | 1922-05-15 | 301 |
| -97 | 2423485 | 1923-03-06 | 301.25 |
| -96 | 2423785 | 1923-12-31 | 300.83 |
| -93 | 2424670 | 1926-06-03 | 300.71 |
| -91 | 2425295 | 1928-02-18 | 301.04 |
| -90 | 2425590 | 1928-12-09 | 300.77 |
| -87 | 2426485 | 1931-05-23 | 301.35 |
| -86 | 2426800 | 1932-04-02 | 302.61 |
| -85 | 2427100 | 1933-01-27 | 302.05 |
| -82 | 2427990 | 1935-07-06 | 300.86 |
| -81 | 2428300 | 1936-05-11 | 300.18 |
| -80 | 2428625 | 1937-04-01 | 299.82 |
| -79 | 2428905 | 1938-01-06 | 300.25 |
| -76 | 2429789 | 1940-06-08 | 300.84 |
| -75 | 2430100 | 1941-04-15 | 299.45 |
| -74 | 2430396 | 1942-02-05 | 299.65 |
| -73 | 2430699 | 1942-12-05 | 301.94 |
| -71 | 2431307 | 1944-08-04 | 303.38 |
| -70 | 2431607 | 1945-05-31 | 302.83 |
| -69 | 2431916 | 1946-04-05 | 302.25 |
| -68 | 2432213 | 1947-01-27 | 303.02 |
| -67 | 2432530 | 1947-12-10 | 303.22 |
| -64 | 2433417 | 1950-05-15 | 303.24 |
| -63 | 2433723 | 1951-03-17 | 302.7 |
| -39 | 2441010 | 1971-02-27 | 302.36 |
| -35 | 2442220 | 1974-06-21 | 302.42 |
| -34 | 2442530 | 1975-04-27 | 302.35 |
| -23 | 2445815 | 1984-04-24 | 301.8 |
| -22 | 2446140 | 1985-03-15 | 300.65 |
| -17 | 2447630 | 1989-04-13 | 300.43 |
| -16 | 2447931 | 1990-02-08 | 301 |
| -15 | 2448230 | 1990-12-04 | 301.17 |
| -13 | 2448830 | 1992-07-26 | 300.65 |
| -12 | 2449139 | 1993-05-31 | 301.12 |
| -11 | 2449440 | 1994-03-28 | 301.28 |
| -10 | 2449743 | 1995-01-25 | 301.71 |
| -9 | 2450040 | 1995-11-18 | 302.44 |
| -7 | 2450640 | 1997-07-10 | 302.35 |
| -6 | 2450944 | 1998-05-10 | 302 |
| -5 | 2451245 | 1999-03-07 | 302.75 |
| -2 | 2452168 | 2001-09-15 | 303.84 |
| -1 | 2452458 | 2002-07-02 | 304.22 |
| 0 | 2452765 | 2003-05-05 | 304 |
| 1 | 2453073 | 2004-03-08 | 303.5 |
| 2 | 2453380 | 2005-01-09 | 303.81 |
| 3 | 2453680 | 2005-11-05 | 304.5 |
| 5 | 2454285 | 2007-07-03 | 304.31 |
| 6 | 2454591 | 2008-05-04 | 303.77 |
| 12 | 2456415 | 2013-05-02 | 303.65 |
| 13 | 2456725 | 2014-03-08 | 303.48 |
| 14 | 2457025 | 2015-01-02 | 303.5 |
| 15 | 2457326 | 2015-10-30 | 303.84 |
| 16 | 2457629 | 2016-08-28 | 303.07 |
| 17 | 2457923 | 2017-06-18 | 302.57 |
| 18 | 2458237 | 2018-04-28 | 303.64 |
| 19 | 2458542 | 2019-02-27 | 303.29 |
| 20 | 2458841 | 2019-12-23 | 303.46 |
| 21 | 2459145 | 2020-10-22 | 304.51 |
| 22 | 2459457 | 2021-08-30 | 302.42 |
| 23 | 2459744 | 2022-06-13 | 301.9 |
| 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. |