| E | O (JD) | O (dat) | Period |
| -113 | 2414630 | 1898-12-06 | 253.89 |
| -108 | 2415900 | 1902-05-30 | 254.3 |
| -107 | 2416140 | 1903-01-25 | 254.59 |
| -106 | 2416400 | 1903-10-12 | 254.53 |
| -104 | 2416910 | 1905-03-05 | 254.93 |
| -103 | 2417168 | 1905-11-18 | 256.19 |
| -100 | 2417930 | 1907-12-20 | 256.61 |
| -97 | 2418703 | 1910-01-31 | 256.69 |
| -94 | 2419475 | 1912-03-13 | 257.05 |
| -90 | 2420507 | 1915-01-09 | 256.85 |
| -87 | 2421271 | 1917-02-11 | 256.39 |
| -84 | 2422050 | 1919-04-01 | 255.59 |
| -83 | 2422310 | 1919-12-17 | 254.45 |
| -81 | 2422805 | 1921-04-25 | 253.41 |
| -80 | 2423058 | 1922-01-03 | 252.46 |
| -77 | 2423810 | 1924-01-25 | 250.83 |
| -76 | 2424060 | 1924-10-01 | 250.43 |
| -74 | 2424560 | 1926-02-13 | 250.48 |
| -73 | 2424820 | 1926-10-31 | 250.91 |
| -71 | 2425309 | 1928-03-03 | 251.5 |
| -70 | 2425566 | 1928-11-15 | 250.53 |
| -68 | 2426058 | 1930-03-22 | 250 |
| -67 | 2426330 | 1930-12-19 | 250.84 |
| -66 | 2426570 | 1931-08-16 | 251.25 |
| -65 | 2426810 | 1932-04-12 | 251.6 |
| -64 | 2427070 | 1932-12-28 | 251.9 |
| -61 | 2427825 | 1935-01-22 | 252.9 |
| -60 | 2428075 | 1935-09-29 | 254.82 |
| -58 | 2428581 | 1937-02-16 | 255.33 |
| -57 | 2428845 | 1937-11-07 | 255.33 |
| -55 | 2429366 | 1939-04-12 | 255.91 |
| -54 | 2429620 | 1939-12-22 | 257.04 |
| -51 | 2430388 | 1942-01-28 | 256.96 |
| -50 | 2430635 | 1942-10-02 | 256.04 |
| -48 | 2431151 | 1944-03-01 | 255.9 |
| -47 | 2431417 | 1944-11-22 | 255.23 |
| -44 | 2432176 | 1946-12-21 | 254.38 |
| -41 | 2432948 | 1949-01-31 | 254.34 |
| -38 | 2433715 | 1951-03-09 | 255.55 |
| -37 | 2433950 | 1951-10-30 | 255.73 |
| -35 | 2434450 | 1953-03-13 | 255.54 |
| -34 | 2434712 | 1953-11-30 | 255.31 |
| -8 | 2441400 | 1972-03-23 | 255.5 |
| -5 | 2442140 | 1974-04-02 | 256.07 |
| -4 | 2442405 | 1974-12-23 | 256.12 |
| -3 | 2442640 | 1975-08-15 | 255.37 |
| -2 | 2442910 | 1976-05-11 | 253.38 |
| -1 | 2443159 | 1977-01-15 | 253.56 |
| 0 | 2443419 | 1977-10-02 | 254 |
| 1 | 2443674 | 1978-06-14 | 254.44 |
| 2 | 2443920 | 1979-02-15 | 254.56 |
| 5 | 2444682 | 1981-03-18 | 253.89 |
| 6 | 2444935 | 1981-11-26 | 252.72 |
| 7 | 2445195 | 1982-08-13 | 254.22 |
| 8 | 2445456 | 1983-05-01 | 255.69 |
| 9 | 2445692 | 1983-12-23 | 255.79 |
| 10 | 2445950 | 1984-09-06 | 254.73 |
| 11 | 2446220 | 1985-06-03 | 253.31 |
| 12 | 2446473 | 1986-02-11 | 254.12 |
| 13 | 2446725 | 1986-10-21 | 255.39 |
| 15 | 2447226 | 1988-03-05 | 254.52 |
| 16 | 2447478 | 1988-11-12 | 253.71 |
| 18 | 2447990 | 1990-04-08 | 253.69 |
| 19 | 2448249 | 1990-12-23 | 254.02 |
| 27 | 2450284 | 1996-07-19 | 254.27 |
| 34 | 2452050 | 2001-05-20 | 254.19 |
| 36 | 2452564 | 2002-10-16 | 254.05 |
| 37 | 2452818 | 2003-06-27 | 253.86 |
| 38 | 2453074 | 2004-03-09 | 254.05 |
| 39 | 2453324 | 2004-11-14 | 254.8 |
| 40 | 2453585 | 2005-08-02 | 255.21 |
| 41 | 2453833 | 2006-04-07 | 256.36 |
| 42 | 2454090 | 2006-12-20 | 257 |
| 43 | 2454346 | 2007-09-02 | 257.07 |
| 44 | 2454609 | 2008-05-22 | 257.43 |
| 45 | 2454872 | 2009-02-09 | 258.14 |
| 46 | 2455124 | 2009-10-19 | 258.64 |
| 47 | 2455384 | 2010-07-06 | 257.93 |
| 48 | 2455638 | 2011-03-17 | 256.29 |
| 49 | 2455899 | 2011-12-03 | 256.29 |
| 50 | 2456158 | 2012-08-18 | 255.79 |
| 51 | 2456408 | 2013-04-25 | 254.64 |
| 52 | 2456661 | 2014-01-03 | 254.86 |
| 53 | 2456923 | 2014-09-22 | 254.21 |
| 54 | 2457166 | 2015-05-23 | 254.36 |
| 55 | 2457421 | 2016-02-02 | 254.29 |
| 56 | 2457684 | 2016-10-22 | 252.86 |
| 57 | 2457932 | 2017-06-27 | 253.14 |
| 58 | 2458195 | 2018-03-17 | 253.36 |
| 59 | 2458434 | 2018-11-11 | 252.07 |
| 60 | 2458690 | 2019-07-25 | 251.93 |
| 61 | 2458943 | 2020-04-03 | 251.41 |
| 62 | 2459191 | 2020-12-07 | 251.11 |
| 63 | 2459443 | 2021-08-16 | 252.42 |
| 64 | 2459700 | 2022-04-30 | 251.7 |
| 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. |