| E | O (JD) | O (dat) | Period |
| -87 | 2411220 | 1889-08-05 | 199.51 |
| -78 | 2413030 | 1894-07-20 | 200 |
| -75 | 2413630 | 1896-03-11 | 200.56 |
| -69 | 2414820 | 1899-06-14 | 201.01 |
| -67 | 2415220 | 1900-07-19 | 201.05 |
| -65 | 2415630 | 1901-09-02 | 201.32 |
| -64 | 2415830 | 1902-03-21 | 202.04 |
| -62 | 2416250 | 1903-05-15 | 202.96 |
| -60 | 2416645 | 1904-06-13 | 203.26 |
| -59 | 2416860 | 1905-01-14 | 202.8 |
| -58 | 2417045 | 1905-07-18 | 201.93 |
| -56 | 2417460 | 1906-09-06 | 200.77 |
| -53 | 2418065 | 1908-05-03 | 200 |
| -51 | 2418465 | 1909-06-07 | 200.33 |
| -49 | 2418865 | 1910-07-12 | 200.65 |
| -47 | 2419250 | 1911-08-01 | 200.44 |
| -40 | 2420655 | 1915-06-06 | 200.65 |
| -38 | 2421063 | 1916-07-18 | 200.98 |
| -33 | 2422070 | 1919-04-21 | 201.48 |
| -31 | 2422475 | 1920-05-30 | 202 |
| -27 | 2423285 | 1922-08-18 | 202.34 |
| -22 | 2424295 | 1925-05-24 | 202.44 |
| -20 | 2424700 | 1926-07-03 | 202.59 |
| -17 | 2425305 | 1928-02-28 | 202.5 |
| -11 | 2426530 | 1931-07-07 | 202.13 |
| -8 | 2427130 | 1933-02-26 | 201.48 |
| -4 | 2427950 | 1935-05-27 | 201 |
| -2 | 2428340 | 1936-06-20 | 200.65 |
| 0 | 2428740 | 1937-07-25 | 199.69 |
| 2 | 2429120 | 1938-08-09 | 198.06 |
| 5 | 2429729 | 1940-04-09 | 196.83 |
| 7 | 2430132 | 1941-05-17 | 196.8 |
| 9 | 2430517 | 1942-06-06 | 196.72 |
| 11 | 2430901 | 1943-06-25 | 195.61 |
| 13 | 2431294 | 1944-07-22 | 194.43 |
| 15 | 2431690 | 1945-08-22 | 195.63 |
| 16 | 2431875 | 1946-02-23 | 197.91 |
| 17 | 2432060 | 1946-08-27 | 199.23 |
| 18 | 2432273 | 1947-03-28 | 199.64 |
| 20 | 2432680 | 1948-05-08 | 201.14 |
| 22 | 2433092 | 1949-06-24 | 202.37 |
| 24 | 2433486 | 1950-07-23 | 202.2 |
| 26 | 2433890 | 1951-08-31 | 202.02 |
| 27 | 2434100 | 1952-03-28 | 201.98 |
| 80 | 2444810 | 1981-07-24 | 201.93 |
| 81 | 2445000 | 1982-01-30 | 201.93 |
| 82 | 2445205 | 1982-08-23 | 201.9 |
| 83 | 2445410 | 1983-03-16 | 201.74 |
| 85 | 2445803 | 1984-04-12 | 201 |
| 87 | 2446209 | 1985-05-23 | 201 |
| 89 | 2446615 | 1986-07-03 | 200.26 |
| 90 | 2446820 | 1987-01-24 | 199.69 |
| 91 | 2447010 | 1987-08-02 | 199.69 |
| 92 | 2447215 | 1988-02-23 | 199.27 |
| 96 | 2448006 | 1990-04-24 | 198.65 |
| 98 | 2448399 | 1991-05-22 | 198.96 |
| 100 | 2448805 | 1992-07-01 | 198.81 |
| 102 | 2449200 | 1993-07-31 | 198.08 |
| 103 | 2449400 | 1994-02-16 | 198.23 |
| 104 | 2449603 | 1994-09-07 | 197.64 |
| 105 | 2449791 | 1995-03-14 | 196.36 |
| 107 | 2450184 | 1996-04-10 | 196.35 |
| 109 | 2450582 | 1997-05-13 | 196.29 |
| 111 | 2450970 | 1998-06-05 | 197 |
| 113 | 2451355 | 1999-06-25 | 198.13 |
| 115 | 2451761 | 2000-08-04 | 198.55 |
| 116 | 2451953 | 2001-02-12 | 199.04 |
| 120 | 2452760 | 2003-04-30 | 199.97 |
| 122 | 2453159 | 2004-06-02 | 200.4 |
| 123 | 2453365 | 2004-12-25 | 200.86 |
| 124 | 2453561 | 2005-07-09 | 201.12 |
| 127 | 2454163 | 2007-03-03 | 201.15 |
| 129 | 2454564 | 2008-04-07 | 201.32 |
| 138 | 2456381 | 2013-03-29 | 201.66 |
| 140 | 2456779 | 2014-05-01 | 202.25 |
| 141 | 2456985 | 2014-11-23 | 202.51 |
| 142 | 2457189 | 2015-06-15 | 202.91 |
| 143 | 2457400 | 2016-01-12 | 203.87 |
| 144 | 2457605 | 2016-08-04 | 204.22 |
| 145 | 2457805 | 2017-02-20 | 203.43 |
| 146 | 2458010 | 2017-09-13 | 202 |
| 147 | 2458208 | 2018-03-30 | 201.42 |
| 148 | 2458415 | 2018-10-23 | 201.07 |
| 149 | 2458607 | 2019-05-03 | 200.29 |
| 150 | 2458810 | 2019-11-22 | 200.07 |
| 151 | 2459015 | 2020-06-14 | 199.72 |
| 152 | 2459210 | 2020-12-26 | 199.76 |
| 153 | 2459409 | 2021-07-13 | 200.59 |
| 154 | 2459610 | 2022-01-30 | 199.01 |
| 155 | 2459809 | 2022-08-17 | 197.82 |
| 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. |