| E | O (JD) | O (dat) | Period |
| -131 | 2413440 | 1895-09-03 | 231.44 |
| -130 | 2413670 | 1896-04-20 | 230.96 |
| -129 | 2413905 | 1896-12-11 | 231.43 |
| -128 | 2414140 | 1897-08-03 | 231.6 |
| -127 | 2414380 | 1898-03-31 | 231.51 |
| -122 | 2415521 | 1901-05-16 | 231.41 |
| -121 | 2415750 | 1901-12-31 | 231.32 |
| -120 | 2415995 | 1902-09-02 | 231.23 |
| -119 | 2416225 | 1903-04-20 | 231.16 |
| -118 | 2416450 | 1903-12-01 | 230.83 |
| -117 | 2416680 | 1904-07-18 | 231.73 |
| -116 | 2416915 | 1905-03-10 | 230.5 |
| -115 | 2417150 | 1905-10-31 | 230.14 |
| -114 | 2417380 | 1906-06-18 | 230.41 |
| -113 | 2417600 | 1907-01-24 | 230.61 |
| -112 | 2417845 | 1907-09-26 | 230.52 |
| -111 | 2418050 | 1908-04-18 | 230.36 |
| -110 | 2418300 | 1908-12-24 | 230.35 |
| -108 | 2418760 | 1910-03-29 | 230.51 |
| -107 | 2418990 | 1910-11-14 | 231.02 |
| -106 | 2419220 | 1911-07-02 | 231.38 |
| -105 | 2419450 | 1912-02-17 | 232.07 |
| -103 | 2419910 | 1913-05-22 | 231.73 |
| -102 | 2420140 | 1914-01-07 | 231.88 |
| -100 | 2420610 | 1915-04-22 | 231.73 |
| -99 | 2420850 | 1915-12-18 | 230.91 |
| -97 | 2421310 | 1917-03-22 | 230.04 |
| -96 | 2421540 | 1917-11-07 | 229.26 |
| -94 | 2422000 | 1919-02-10 | 228.41 |
| -91 | 2422690 | 1920-12-31 | 228.2 |
| -89 | 2423130 | 1922-03-16 | 228.74 |
| -88 | 2423350 | 1922-10-22 | 229.34 |
| -85 | 2424040 | 1924-09-11 | 229.6 |
| -84 | 2424260 | 1925-04-19 | 230.03 |
| -81 | 2424970 | 1927-03-30 | 230.85 |
| -79 | 2425450 | 1928-07-22 | 231.82 |
| -78 | 2425680 | 1929-03-09 | 232.37 |
| -77 | 2425895 | 1929-10-10 | 232.39 |
| -76 | 2426127 | 1930-05-30 | 232.25 |
| -75 | 2426365 | 1931-01-23 | 231.74 |
| -74 | 2426595 | 1931-09-10 | 231.44 |
| -73 | 2426830 | 1932-05-02 | 231.98 |
| -70 | 2427520 | 1934-03-23 | 232.47 |
| -69 | 2427755 | 1934-11-13 | 232.42 |
| -68 | 2427995 | 1935-07-11 | 232.41 |
| -67 | 2428218 | 1936-02-19 | 232.19 |
| -66 | 2428455 | 1936-10-13 | 232.36 |
| -65 | 2428686 | 1937-06-01 | 233.08 |
| -64 | 2428920 | 1938-01-21 | 232.73 |
| -63 | 2429155 | 1938-09-13 | 231.92 |
| -62 | 2429375 | 1939-04-21 | 231.75 |
| -61 | 2429620 | 1939-12-22 | 231.78 |
| -60 | 2429860 | 1940-08-18 | 232.57 |
| -59 | 2430080 | 1941-03-26 | 233.65 |
| -58 | 2430300 | 1941-11-01 | 234.37 |
| -57 | 2430535 | 1942-06-24 | 235.12 |
| -56 | 2430780 | 1943-02-24 | 235.23 |
| -54 | 2431255 | 1944-06-13 | 236.34 |
| -53 | 2431500 | 1945-02-13 | 238.02 |
| -52 | 2431730 | 1945-10-01 | 238.77 |
| -51 | 2431965 | 1946-05-24 | 238.62 |
| -50 | 2432200 | 1947-01-14 | 239.18 |
| -49 | 2432450 | 1947-09-21 | 239.64 |
| -48 | 2432695 | 1948-05-23 | 239.91 |
| -47 | 2432925 | 1949-01-08 | 240.05 |
| -46 | 2433160 | 1949-08-31 | 239.19 |
| -45 | 2433420 | 1950-05-18 | 237.62 |
| -44 | 2433650 | 1951-01-03 | 236.97 |
| -43 | 2433890 | 1951-08-31 | 236.08 |
| -42 | 2434120 | 1952-04-17 | 235.47 |
| -37 | 2435310 | 1955-07-21 | 235.03 |
| -32 | 2436480 | 1958-10-03 | 234.01 |
| -31 | 2436720 | 1959-05-31 | 233.61 |
| -30 | 2436930 | 1959-12-27 | 233.41 |
| -29 | 2437160 | 1960-08-13 | 233.03 |
| -28 | 2437405 | 1961-04-15 | 231.46 |
| -27 | 2437610 | 1961-11-06 | 230.82 |
| -26 | 2437850 | 1962-07-04 | 231.52 |
| -25 | 2438105 | 1963-03-16 | 231.95 |
| -24 | 2438330 | 1963-10-27 | 231.6 |
| -23 | 2438555 | 1964-06-08 | 231.12 |
| -22 | 2438783 | 1965-01-22 | 230.86 |
| -21 | 2439025 | 1965-09-21 | 229.34 |
| -20 | 2439240 | 1966-04-24 | 228.45 |
| -19 | 2439475 | 1966-12-15 | 228.15 |
| -18 | 2439705 | 1967-08-02 | 227.62 |
| -17 | 2439925 | 1968-03-09 | 226.86 |
| -16 | 2440155 | 1968-10-25 | 226.59 |
| -15 | 2440390 | 1969-06-17 | 227.07 |
| -14 | 2440605 | 1970-01-18 | 226.6 |
| -13 | 2440830 | 1970-08-31 | 226.81 |
| -12 | 2441055 | 1971-04-13 | 226.95 |
| -11 | 2441292 | 1971-12-06 | 226.67 |
| -10 | 2441520 | 1972-07-21 | 226.26 |
| -9 | 2441740 | 1973-02-26 | 226.54 |
| -8 | 2441973 | 1973-10-17 | 225.99 |
| -7 | 2442195 | 1974-05-27 | 225.13 |
| -6 | 2442420 | 1975-01-07 | 224.67 |
| -5 | 2442640 | 1975-08-15 | 224.74 |
| -4 | 2442870 | 1976-04-01 | 225.62 |
| -3 | 2443090 | 1976-11-07 | 226.77 |
| -2 | 2443310 | 1977-06-15 | 228.05 |
| -1 | 2443545 | 1978-02-05 | 228.91 |
| 0 | 2443770 | 1978-09-18 | 228.82 |
| 1 | 2444010 | 1979-05-16 | 228.77 |
| 2 | 2444250 | 1980-01-11 | 229.36 |
| 3 | 2444475 | 1980-08-23 | 229.83 |
| 4 | 2444700 | 1981-04-05 | 230.65 |
| 5 | 2444910 | 1981-11-01 | 231.48 |
| 6 | 2445145 | 1982-06-24 | 231.58 |
| 7 | 2445384 | 1983-02-18 | 232.77 |
| 8 | 2445620 | 1983-10-12 | 233.76 |
| 9 | 2445870 | 1984-06-18 | 234.28 |
| 10 | 2446100 | 1985-02-03 | 234.85 |
| 11 | 2446325 | 1985-09-16 | 234.5 |
| 12 | 2446572 | 1986-05-21 | 233.88 |
| 13 | 2446792 | 1986-12-27 | 235.34 |
| 14 | 2447020 | 1987-08-12 | 236.68 |
| 15 | 2447260 | 1988-04-08 | 237.36 |
| 16 | 2447500 | 1988-12-04 | 235.44 |
| 17 | 2447730 | 1989-07-22 | 234.93 |
| 24 | 2449401 | 1994-02-17 | 234.69 |
| 32 | 2451308 | 1999-05-09 | 234.54 |
| 33 | 2451550 | 2000-01-06 | 234.32 |
| 53 | 2456180 | 2012-09-09 | 234.07 |
| 54 | 2456412 | 2013-04-29 | 233.75 |
| 55 | 2456640 | 2013-12-13 | 232.91 |
| 56 | 2456885 | 2014-08-15 | 232.06 |
| 57 | 2457118 | 2015-04-05 | 231.89 |
| 58 | 2457350 | 2015-11-23 | 232.41 |
| 59 | 2457585 | 2016-07-15 | 232.25 |
| 60 | 2457809 | 2017-02-24 | 232.04 |
| 61 | 2458038 | 2017-10-11 | 231.35 |
| 62 | 2458271 | 2018-06-01 | 231.09 |
| 63 | 2458504 | 2019-01-20 | 231.48 |
| 64 | 2458739 | 2019-09-12 | 232.06 |
| 65 | 2458971 | 2020-05-01 | 232.92 |
| 66 | 2459199 | 2020-12-15 | 233.22 |
| 67 | 2459426 | 2021-07-30 | 233.3 |
| 68 | 2459669 | 2022-03-30 | 233.42 |
| 69 | 2459905 | 2022-11-21 | 233.61 |
| 70 | 2460140 | 2023-07-14 | 234.21 |
| 71 | 2460370 | 2024-02-29 | 235.23 |
| 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. |