| E | O (JD) | O (dat) | Period |
| -108 | 2412770 | 1893-11-02 | 278.3 |
| -103 | 2414150 | 1897-08-13 | 278.45 |
| -99 | 2415265 | 1900-09-02 | 278.05 |
| -98 | 2415550 | 1901-06-14 | 277.31 |
| -95 | 2416385 | 1903-09-27 | 276.84 |
| -94 | 2416663 | 1904-07-01 | 276.48 |
| -91 | 2417500 | 1906-10-16 | 275.9 |
| -90 | 2417762 | 1907-07-05 | 275.22 |
| -87 | 2418577 | 1909-09-27 | 274.93 |
| -86 | 2418850 | 1910-06-27 | 275.12 |
| -84 | 2419400 | 1911-12-29 | 275.92 |
| -83 | 2419680 | 1912-10-04 | 277.68 |
| -82 | 2419960 | 1913-07-11 | 279.05 |
| -79 | 2420789 | 1915-10-18 | 280.05 |
| -78 | 2421078 | 1916-08-02 | 280.33 |
| -74 | 2422190 | 1919-08-19 | 280.43 |
| -70 | 2423330 | 1922-10-02 | 280.22 |
| -69 | 2423610 | 1923-07-09 | 279.94 |
| -66 | 2424450 | 1925-10-26 | 279.55 |
| -65 | 2424724 | 1926-07-27 | 278.81 |
| -62 | 2425560 | 1928-11-09 | 278.15 |
| -61 | 2425830 | 1929-08-06 | 277.23 |
| -58 | 2426665 | 1931-11-19 | 276.95 |
| -57 | 2426935 | 1932-08-15 | 276.8 |
| -54 | 2427770 | 1934-11-28 | 276.59 |
| -53 | 2428048 | 1935-09-02 | 276.05 |
| -52 | 2428325 | 1936-06-05 | 275.79 |
| -50 | 2428875 | 1937-12-07 | 275.31 |
| -49 | 2429157 | 1938-09-15 | 275.23 |
| -48 | 2429420 | 1939-06-05 | 274.73 |
| -46 | 2429965 | 1940-12-01 | 273.98 |
| -45 | 2430242 | 1941-09-04 | 273.6 |
| -44 | 2430520 | 1942-06-09 | 273.28 |
| -41 | 2431349 | 1944-09-15 | 273.2 |
| -40 | 2431620 | 1945-06-13 | 273.46 |
| -38 | 2432150 | 1946-11-25 | 273.4 |
| -37 | 2432428 | 1947-08-30 | 273.66 |
| -36 | 2432700 | 1948-05-28 | 273.67 |
| -33 | 2433524 | 1950-08-30 | 273.67 |
| -32 | 2433800 | 1951-06-02 | 273.96 |
| -29 | 2434620 | 1953-08-30 | 274.36 |
| -21 | 2436818 | 1959-09-06 | 274.45 |
| -18 | 2437634 | 1961-11-30 | 274.64 |
| -17 | 2437904 | 1962-08-27 | 275.32 |
| -16 | 2438188 | 1963-06-07 | 275.57 |
| -14 | 2438746 | 1964-12-16 | 276.22 |
| -13 | 2439020 | 1965-09-16 | 278.12 |
| -12 | 2439299 | 1966-06-22 | 279.07 |
| -10 | 2439884 | 1968-01-28 | 279.8 |
| -9 | 2440129 | 1968-09-29 | 280.14 |
| -8 | 2440409 | 1969-07-06 | 280.48 |
| -5 | 2441262 | 1971-11-06 | 280.43 |
| -4 | 2441537 | 1972-08-07 | 280.21 |
| -1 | 2442390 | 1974-12-08 | 279.9 |
| 0 | 2442672 | 1975-09-16 | 280.15 |
| 1 | 2442950 | 1976-06-20 | 279.25 |
| 3 | 2443500 | 1977-12-22 | 277.87 |
| 4 | 2443778 | 1978-09-26 | 276.86 |
| 5 | 2444055 | 1979-06-30 | 275.34 |
| 7 | 2444605 | 1980-12-31 | 275.04 |
| 8 | 2444879 | 1981-10-01 | 274.84 |
| 9 | 2445150 | 1982-06-29 | 274.82 |
| 11 | 2445700 | 1983-12-31 | 275.06 |
| 12 | 2445971 | 1984-09-27 | 274.97 |
| 13 | 2446253 | 1985-07-06 | 275.03 |
| 15 | 2446800 | 1987-01-04 | 275.07 |
| 16 | 2447078 | 1987-10-09 | 274.51 |
| 17 | 2447361 | 1988-07-18 | 273.76 |
| 19 | 2447900 | 1990-01-08 | 272.25 |
| 20 | 2448176 | 1990-10-11 | 271.18 |
| 21 | 2448450 | 1991-07-12 | 270.19 |
| 24 | 2449259 | 1993-09-28 | 269.5 |
| 25 | 2449527 | 1994-06-23 | 268.87 |
| 26 | 2449770 | 1995-02-21 | 268.58 |
| 27 | 2450054 | 1995-12-02 | 267.44 |
| 28 | 2450320 | 1996-08-24 | 267.3 |
| 29 | 2450595 | 1997-05-26 | 267.4 |
| 31 | 2451132 | 1998-11-14 | 268.11 |
| 32 | 2451399 | 1999-08-08 | 269.2 |
| 34 | 2451912 | 2001-01-02 | 269.27 |
| 35 | 2452197 | 2001-10-14 | 270.06 |
| 36 | 2452465 | 2002-07-09 | 270.71 |
| 38 | 2453010 | 2004-01-05 | 271.99 |
| 39 | 2453292 | 2004-10-13 | 273.38 |
| 40 | 2453561 | 2005-07-09 | 274.88 |
| 41 | 2453840 | 2006-04-14 | 274.98 |
| 42 | 2454110 | 2007-01-09 | 275.92 |
| 43 | 2454389 | 2007-10-15 | 276.16 |
| 44 | 2454667 | 2008-07-19 | 276.24 |
| 45 | 2454940 | 2009-04-18 | 277.51 |
| 46 | 2455220 | 2010-01-23 | 277.37 |
| 47 | 2455503 | 2010-11-02 | 277.12 |
| 48 | 2455770 | 2011-07-27 | 276.28 |
| 49 | 2456050 | 2012-05-02 | 275.35 |
| 50 | 2456346 | 2013-02-22 | 274.86 |
| 51 | 2456603 | 2013-11-06 | 274.01 |
| 52 | 2456874 | 2014-08-04 | 273.34 |
| 53 | 2457144 | 2015-05-01 | 273.53 |
| 54 | 2457414 | 2016-01-26 | 272.85 |
| 55 | 2457695 | 2016-11-02 | 273.03 |
| 56 | 2457965 | 2017-07-30 | 274.21 |
| 57 | 2458238 | 2018-04-29 | 274.72 |
| 58 | 2458521 | 2019-02-06 | 275.1 |
| 59 | 2458785 | 2019-10-28 | 275.27 |
| 60 | 2459071 | 2020-08-09 | 275.15 |
| 61 | 2459342 | 2021-05-07 | 275.54 |
| 62 | 2459618 | 2022-02-07 | 275.57 |
| 63 | 2459893 | 2022-11-09 | 275.14 |
| 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. |