| E | O (JD) | O (dat) | Period |
| -78 | 2415810 | 1902-03-01 | 252.1 |
| -77 | 2416060 | 1902-11-06 | 253.31 |
| -75 | 2416580 | 1904-04-09 | 254.05 |
| -74 | 2416820 | 1904-12-05 | 252.79 |
| -71 | 2417578 | 1907-01-02 | 252.76 |
| -68 | 2418350 | 1909-02-12 | 252.45 |
| -67 | 2418600 | 1909-10-20 | 252.77 |
| -65 | 2419090 | 1911-02-22 | 253.06 |
| -61 | 2420110 | 1913-12-08 | 252.29 |
| -58 | 2420861 | 1915-12-29 | 251.8 |
| -48 | 2423408 | 1922-12-19 | 252.07 |
| -46 | 2423896 | 1924-04-20 | 252.43 |
| -45 | 2424142 | 1924-12-22 | 252.49 |
| -44 | 2424391 | 1925-08-28 | 251.69 |
| -43 | 2424642 | 1926-05-06 | 250.85 |
| -41 | 2425160 | 1927-10-06 | 252.05 |
| -39 | 2425658 | 1929-02-15 | 252.62 |
| -38 | 2425910 | 1929-10-25 | 253.05 |
| -36 | 2426411 | 1931-03-10 | 252.52 |
| -35 | 2426668 | 1931-11-22 | 252.7 |
| -33 | 2427170 | 1933-04-07 | 253.13 |
| -32 | 2427430 | 1933-12-23 | 253 |
| -29 | 2428180 | 1936-01-12 | 252.78 |
| -28 | 2428450 | 1936-10-08 | 252.57 |
| -26 | 2428940 | 1938-02-10 | 252.25 |
| -25 | 2429200 | 1938-10-28 | 253.08 |
| -23 | 2429693 | 1940-03-04 | 253.44 |
| -22 | 2429954 | 1940-11-20 | 252.82 |
| -19 | 2430700 | 1942-12-06 | 252.86 |
| -16 | 2431490 | 1945-02-03 | 253.27 |
| -9 | 2433250 | 1949-11-29 | 253.33 |
| -6 | 2434000 | 1951-12-19 | 253.05 |
| -3 | 2434760 | 1954-01-17 | 252.82 |
| 0 | 2435530 | 1956-02-26 | 252.72 |
| 16 | 2439570 | 1967-03-20 | 253.05 |
| 17 | 2439810 | 1967-11-15 | 253.15 |
| 19 | 2440330 | 1969-04-18 | 252.87 |
| 20 | 2440584 | 1969-12-28 | 252.81 |
| 22 | 2441090 | 1971-05-18 | 253.48 |
| 23 | 2441340 | 1972-01-23 | 253.17 |
| 26 | 2442099 | 1974-02-20 | 252.78 |
| 27 | 2442355 | 1974-11-03 | 252.87 |
| 29 | 2442855 | 1976-03-17 | 252.42 |
| 30 | 2443108 | 1976-11-25 | 251.88 |
| 32 | 2443620 | 1978-04-21 | 251.85 |
| 33 | 2443870 | 1978-12-27 | 252.31 |
| 36 | 2444618 | 1981-01-13 | 252.73 |
| 39 | 2445370 | 1983-02-04 | 252.54 |
| 40 | 2445632 | 1983-10-24 | 252.35 |
| 42 | 2446138 | 1985-03-13 | 252.65 |
| 43 | 2446396 | 1985-11-26 | 252.75 |
| 45 | 2446898 | 1987-04-12 | 252.3 |
| 46 | 2447153 | 1987-12-23 | 251.74 |
| 49 | 2447904 | 1990-01-12 | 251.61 |
| 50 | 2448150 | 1990-09-15 | 251.65 |
| 52 | 2448655 | 1992-02-02 | 251.52 |
| 53 | 2448905 | 1992-10-09 | 251.36 |
| 55 | 2449416 | 1994-03-04 | 252.15 |
| 56 | 2449666 | 1994-11-09 | 253.42 |
| 58 | 2450170 | 1996-03-27 | 254.11 |
| 59 | 2450417 | 1996-11-29 | 253.94 |
| 60 | 2450680 | 1997-08-19 | 253.76 |
| 61 | 2450940 | 1998-05-06 | 254.12 |
| 62 | 2451194 | 1999-01-15 | 254.47 |
| 63 | 2451444 | 1999-09-22 | 253.61 |
| 65 | 2451952 | 2001-02-11 | 252.68 |
| 66 | 2452204 | 2001-10-21 | 252.95 |
| 68 | 2452709 | 2003-03-10 | 252.85 |
| 69 | 2452953 | 2003-11-09 | 252.89 |
| 71 | 2453468 | 2005-04-07 | 253.11 |
| 72 | 2453725 | 2005-12-20 | 253.29 |
| 73 | 2453970 | 2006-08-22 | 253.18 |
| 74 | 2454231 | 2007-05-10 | 252.18 |
| 75 | 2454481 | 2008-01-15 | 251.53 |
| 76 | 2454738 | 2008-09-28 | 251.89 |
| 78 | 2455228 | 2010-01-31 | 252.05 |
| 79 | 2455480 | 2010-10-10 | 252 |
| 81 | 2455989 | 2012-03-02 | 252.48 |
| 82 | 2456240 | 2012-11-08 | 253.38 |
| 84 | 2456750 | 2014-04-02 | 253.9 |
| 85 | 2457002 | 2014-12-10 | 254.16 |
| 87 | 2457519 | 2016-05-10 | 254.72 |
| 88 | 2457768 | 2017-01-14 | 254.65 |
| 89 | 2458018 | 2017-09-21 | 254.71 |
| 90 | 2458280 | 2018-06-10 | 254.24 |
| 91 | 2458534 | 2019-02-19 | 253.37 |
| 92 | 2458785 | 2019-10-28 | 254.04 |
| 94 | 2459297 | 2021-03-23 | 254.24 |
| 95 | 2459546 | 2021-11-27 | 253 |
| 96 | 2459795 | 2022-08-03 | 252.85 |
| 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. |