| E | O (JD) | O (dat) | Period |
| -94 | 2413910 | 1896-12-16 | 262.26 |
| -90 | 2415000 | 1899-12-11 | 264.11 |
| -88 | 2415500 | 1901-04-25 | 265.43 |
| -87 | 2415776 | 1902-01-26 | 265.01 |
| -86 | 2416030 | 1902-10-07 | 263.33 |
| -84 | 2416572 | 1904-04-01 | 262.4 |
| -83 | 2416834 | 1904-12-19 | 262.58 |
| -80 | 2417620 | 1907-02-13 | 262.4 |
| -77 | 2418400 | 1909-04-03 | 262.21 |
| -76 | 2418660 | 1909-12-19 | 261.66 |
| -73 | 2419443 | 1912-02-10 | 262.27 |
| -72 | 2419710 | 1912-11-03 | 263.08 |
| -69 | 2420496 | 1914-12-29 | 263.85 |
| -68 | 2420760 | 1915-09-19 | 264.89 |
| -66 | 2421300 | 1917-03-12 | 265.42 |
| -65 | 2421560 | 1917-11-27 | 265.29 |
| -62 | 2422360 | 1920-02-05 | 265.15 |
| -61 | 2422630 | 1920-11-01 | 264.69 |
| -58 | 2423424 | 1923-01-04 | 264.53 |
| -55 | 2424210 | 1925-02-28 | 264.24 |
| -54 | 2424470 | 1925-11-15 | 263.93 |
| -51 | 2425266 | 1928-01-20 | 263.93 |
| -50 | 2425530 | 1928-10-10 | 263.58 |
| -48 | 2426053 | 1930-03-17 | 264.08 |
| -47 | 2426327 | 1930-12-16 | 264.46 |
| -44 | 2427117 | 1933-02-13 | 263.54 |
| -43 | 2427370 | 1933-10-24 | 263.08 |
| -41 | 2427912 | 1935-04-19 | 262 |
| -40 | 2428171 | 1936-01-03 | 261.21 |
| -37 | 2428950 | 1938-02-20 | 261.64 |
| -36 | 2429210 | 1938-11-07 | 261.73 |
| -34 | 2429720 | 1940-03-31 | 261.76 |
| -33 | 2429993 | 1940-12-29 | 262.15 |
| -32 | 2430250 | 1941-09-12 | 262.8 |
| -30 | 2430790 | 1943-03-06 | 263.6 |
| -26 | 2431837 | 1946-01-16 | 264.46 |
| -25 | 2432100 | 1946-10-06 | 264.5 |
| -23 | 2432630 | 1948-03-19 | 263.33 |
| -22 | 2432890 | 1948-12-04 | 263.32 |
| -21 | 2433170 | 1949-09-10 | 263.98 |
| -18 | 2433950 | 1951-10-30 | 264.11 |
| -5 | 2437360 | 1961-03-01 | 264.15 |
| -4 | 2437643 | 1961-12-09 | 264.18 |
| -1 | 2438437 | 1964-02-11 | 264.1 |
| 0 | 2438706 | 1964-11-06 | 264.66 |
| 7 | 2440550 | 1969-11-24 | 264.75 |
| 10 | 2441361 | 1972-02-13 | 263.4 |
| 13 | 2442133 | 1974-03-26 | 262.82 |
| 14 | 2442410 | 1974-12-28 | 262.18 |
| 17 | 2443183 | 1977-02-08 | 260.32 |
| 18 | 2443433 | 1977-10-16 | 259.46 |
| 20 | 2443960 | 1979-03-27 | 259.72 |
| 21 | 2444210 | 1979-12-02 | 260 |
| 24 | 2444990 | 1982-01-20 | 261.5 |
| 25 | 2445250 | 1982-10-07 | 262.6 |
| 27 | 2445786 | 1984-03-26 | 263.72 |
| 28 | 2446047 | 1984-12-12 | 265.04 |
| 31 | 2446845 | 1987-02-18 | 265.96 |
| 32 | 2447113 | 1987-11-13 | 265.82 |
| 34 | 2447650 | 1989-05-03 | 265.32 |
| 35 | 2447911 | 1990-01-19 | 265 |
| 36 | 2448180 | 1990-10-15 | 264.7 |
| 38 | 2448704 | 1992-03-22 | 264.63 |
| 39 | 2448966 | 1992-12-09 | 264.68 |
| 41 | 2449491 | 1994-05-18 | 264.35 |
| 42 | 2449761 | 1995-02-12 | 264.95 |
| 43 | 2450030 | 1995-11-08 | 266.05 |
| 45 | 2450560 | 1997-04-21 | 266.26 |
| 46 | 2450818 | 1998-01-04 | 266 |
| 47 | 2451100 | 1998-10-13 | 265.18 |
| 49 | 2451625 | 2000-03-21 | 264.73 |
| 50 | 2451891 | 2000-12-12 | 264.73 |
| 53 | 2452681 | 2003-02-10 | 263.82 |
| 54 | 2452944 | 2003-10-31 | 262.95 |
| 56 | 2453470 | 2005-04-09 | 262.91 |
| 57 | 2453732 | 2005-12-27 | 262.76 |
| 58 | 2453990 | 2006-09-11 | 262.85 |
| 60 | 2454520 | 2008-02-23 | 262.43 |
| 61 | 2454780 | 2008-11-09 | 262.32 |
| 63 | 2455310 | 2010-04-23 | 262.74 |
| 64 | 2455572 | 2011-01-10 | 262.78 |
| 67 | 2456353 | 2013-03-01 | 262.23 |
| 68 | 2456620 | 2013-11-23 | 261.67 |
| 70 | 2457145 | 2015-05-02 | 261.65 |
| 71 | 2457409 | 2016-01-21 | 262.33 |
| 72 | 2457660 | 2016-09-28 | 262.75 |
| 73 | 2457925 | 2017-06-20 | 262.34 |
| 74 | 2458190 | 2018-03-12 | 262.86 |
| 75 | 2458457 | 2018-12-04 | 263.79 |
| 76 | 2458720 | 2019-08-24 | 265 |
| 77 | 2458980 | 2020-05-10 | 265.69 |
| 78 | 2459254 | 2021-02-08 | 264.68 |
| 79 | 2459508 | 2021-10-20 | 264.59 |
| 80 | 2459787 | 2022-07-26 | 264.89 |
| 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. |