| E | O (JD) | O (dat) | Period |
| -157 | 2410063 | 1886-06-05 | 145.96 |
| -149 | 2411235 | 1889-08-20 | 145.96 |
| -139 | 2412704 | 1893-08-28 | 145.96 |
| -137 | 2412983 | 1894-06-03 | 146 |
| -135 | 2413270 | 1895-03-17 | 146.25 |
| -134 | 2413422 | 1895-08-16 | 146.25 |
| -132 | 2413715 | 1896-06-04 | 146.21 |
| -131 | 2413861 | 1896-10-28 | 146.2 |
| -130 | 2414010 | 1897-03-26 | 147.26 |
| -129 | 2414175 | 1897-09-07 | 147.25 |
| -127 | 2414450 | 1898-06-09 | 147.11 |
| -125 | 2414740 | 1899-03-26 | 146.94 |
| -124 | 2414883 | 1899-08-16 | 146.89 |
| -122 | 2415200 | 1900-06-29 | 146.6 |
| -120 | 2415480 | 1901-04-05 | 146.46 |
| -119 | 2415630 | 1901-09-02 | 147.13 |
| -117 | 2415919 | 1902-06-18 | 147.14 |
| -116 | 2416070 | 1902-11-16 | 147.01 |
| -115 | 2416210 | 1903-04-05 | 146.53 |
| -114 | 2416361 | 1903-09-03 | 146.82 |
| -112 | 2416658 | 1904-06-26 | 146.85 |
| -110 | 2416951 | 1905-04-15 | 147.05 |
| -109 | 2417099 | 1905-09-10 | 146.87 |
| -107 | 2417389 | 1906-06-27 | 146.93 |
| -105 | 2417680 | 1907-04-14 | 147.03 |
| -104 | 2417832 | 1907-09-13 | 147.43 |
| -102 | 2418128 | 1908-07-05 | 147.37 |
| -100 | 2418415 | 1909-04-18 | 147.71 |
| -99 | 2418565 | 1909-09-15 | 147.92 |
| -97 | 2418868 | 1910-07-15 | 147.78 |
| -95 | 2419170 | 1911-05-13 | 147.66 |
| -94 | 2419300 | 1911-09-20 | 147.51 |
| -92 | 2419610 | 1912-07-26 | 147.61 |
| -90 | 2419900 | 1913-05-12 | 147.65 |
| -89 | 2420040 | 1913-09-29 | 147.99 |
| -87 | 2420340 | 1914-07-26 | 148.25 |
| -85 | 2420630 | 1915-05-12 | 148.92 |
| -84 | 2420784 | 1915-10-13 | 148.54 |
| -83 | 2420940 | 1916-03-17 | 148.89 |
| -82 | 2421100 | 1916-08-24 | 148.99 |
| -80 | 2421385 | 1917-06-05 | 148.92 |
| -77 | 2421836 | 1918-08-30 | 148.74 |
| -75 | 2422120 | 1919-06-10 | 147.93 |
| -72 | 2422575 | 1920-09-07 | 147.64 |
| -68 | 2423170 | 1922-04-25 | 147.37 |
| -67 | 2423320 | 1922-09-22 | 147.39 |
| -65 | 2423610 | 1923-07-09 | 146.99 |
| -62 | 2424030 | 1924-09-01 | 147.06 |
| -60 | 2424341 | 1925-07-09 | 146.96 |
| -58 | 2424630 | 1926-04-24 | 147.07 |
| -57 | 2424780 | 1926-09-21 | 147.35 |
| -53 | 2425360 | 1928-04-23 | 147.73 |
| -52 | 2425520 | 1928-09-30 | 148.08 |
| -50 | 2425821 | 1929-07-28 | 148.12 |
| -48 | 2426112 | 1930-05-15 | 148.14 |
| -47 | 2426260 | 1930-10-10 | 147.99 |
| -45 | 2426553 | 1931-07-30 | 147.92 |
| -43 | 2426848 | 1932-05-20 | 147.32 |
| -40 | 2427305 | 1933-08-20 | 147.07 |
| -38 | 2427587 | 1934-05-29 | 147.23 |
| -35 | 2428030 | 1935-08-15 | 147.4 |
| -33 | 2428326 | 1936-06-06 | 147.53 |
| -32 | 2428460 | 1936-10-18 | 147.72 |
| -31 | 2428610 | 1937-03-17 | 147.63 |
| -30 | 2428770 | 1937-08-24 | 147.91 |
| -28 | 2429070 | 1938-06-20 | 147.71 |
| -26 | 2429363 | 1939-04-09 | 147.54 |
| -25 | 2429516 | 1939-09-09 | 147.74 |
| -23 | 2429802 | 1940-06-21 | 147.57 |
| -21 | 2430092 | 1941-04-07 | 147.23 |
| -20 | 2430236 | 1941-08-29 | 147.58 |
| -18 | 2430532 | 1942-06-21 | 147.47 |
| -16 | 2430837 | 1943-04-22 | 147.71 |
| -15 | 2430987 | 1943-09-19 | 147.83 |
| -14 | 2431130 | 1944-02-09 | 147.37 |
| -13 | 2431292 | 1944-07-20 | 147.1 |
| -11 | 2431565 | 1945-04-19 | 146.56 |
| -10 | 2431725 | 1945-09-26 | 146.65 |
| -8 | 2432008 | 1946-07-06 | 146.79 |
| -6 | 2432295 | 1947-04-19 | 147.58 |
| -5 | 2432450 | 1947-09-21 | 147.44 |
| -3 | 2432741 | 1948-07-08 | 147.45 |
| -1 | 2433051 | 1949-05-14 | 147.49 |
| 2 | 2433485 | 1950-07-22 | 147.5 |
| 7 | 2434240 | 1952-08-15 | 147.51 |
| 81 | 2445135 | 1982-06-14 | 147.47 |
| 86 | 2445869 | 1984-06-17 | 147.47 |
| 89 | 2446326 | 1985-09-17 | 147.44 |
| 91 | 2446610 | 1986-06-28 | 147.46 |
| 93 | 2446915 | 1987-04-29 | 147.37 |
| 94 | 2447050 | 1987-09-11 | 147.78 |
| 96 | 2447360 | 1988-07-17 | 147.81 |
| 99 | 2447800 | 1989-09-30 | 147.64 |
| 101 | 2448100 | 1990-07-27 | 148.06 |
| 104 | 2448530 | 1991-09-30 | 148.05 |
| 106 | 2448825 | 1992-07-21 | 147.84 |
| 108 | 2449130 | 1993-05-22 | 147.45 |
| 111 | 2449570 | 1994-08-05 | 147.58 |
| 113 | 2449880 | 1995-06-11 | 147.79 |
| 116 | 2450317 | 1996-08-21 | 147.92 |
| 121 | 2451040 | 1998-08-14 | 147.82 |
| 126 | 2451777 | 2000-08-20 | 147.67 |
| 128 | 2452084 | 2001-06-23 | 147.7 |
| 131 | 2452537 | 2002-09-19 | 147.62 |
| 133 | 2452825 | 2003-07-04 | 147.85 |
| 136 | 2453266 | 2004-09-17 | 148.06 |
| 138 | 2453560 | 2005-07-08 | 147.78 |
| 140 | 2453860 | 2006-05-04 | 147.47 |
| 141 | 2454005 | 2006-09-26 | 147.53 |
| 143 | 2454299 | 2007-07-17 | 147.79 |
| 145 | 2454594 | 2008-05-07 | 147.59 |
| 146 | 2454740 | 2008-09-30 | 147.41 |
| 148 | 2455040 | 2009-07-27 | 147.24 |
| 153 | 2455781 | 2011-08-07 | 147.43 |
| 155 | 2456075 | 2012-05-27 | 147.31 |
| 156 | 2456210 | 2012-10-09 | 147.02 |
| 158 | 2456506 | 2013-08-01 | 146.86 |
| 160 | 2456801 | 2014-05-23 | 146.51 |
| 161 | 2456960 | 2014-10-29 | 146.66 |
| 162 | 2457095 | 2015-03-13 | 146.78 |
| 163 | 2457234 | 2015-07-30 | 147.22 |
| 165 | 2457535 | 2016-05-26 | 147.11 |
| 166 | 2457680 | 2016-10-18 | 147.34 |
| 167 | 2457840 | 2017-03-27 | 147.04 |
| 168 | 2457974 | 2017-08-08 | 147.85 |
| 170 | 2458275 | 2018-06-05 | 147.42 |
| 171 | 2458420 | 2018-10-28 | 146.99 |
| 172 | 2458575 | 2019-04-01 | 147.02 |
| 173 | 2458708 | 2019-08-12 | 146.67 |
| 175 | 2459018 | 2020-06-17 | 146.95 |
| 176 | 2459145 | 2020-10-22 | 146.59 |
| 177 | 2459300 | 2021-03-26 | 146.57 |
| 178 | 2459453 | 2021-08-26 | 146.36 |
| 180 | 2459740 | 2022-06-09 | 147.19 |
| 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. |