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Table E.1
Summary of the results of fitting model (2) to the modulations of the pulsation period P.
| CEP | P | βP |  |
fP | ΔP | σΔP | ΔPc |
|---|---|---|---|---|---|---|---|
| [d] | [10−7 d∕d] | [10−7 d∕d] | [1∕d] | [10−4 d] | [10−4 d] | [10−4 d] | |
| FU Cepheids with twin peaks | |||||||
| 1140 | 8.1864915 | –0.5779 | 0.2094 | 0.00115 | 1.1214 | 0.0900 | 2.3633 |
| 1418 | 2.8957105 | –0.3781 | 0.0525 | 0.00091 | 0.3207 | 0.0272 | 0.5437 |
| 1621 | 3.3588290 | –0.5340 | 0.1528 | 0.00066 | 1.3521 | 0.1350 | 1.9206 |
| 1748 | 6.6320016 | –1.0912 | 0.1293 | 0.00118 | 0.8824 | 0.0611 | 1.9000 |
| 1833 | 19.1635310 | –21.7161 | 1.5753 | 0.00113 | 7.3639 | 1.0115 | 15.1125 |
| 1932 | 2.9467014 | –0.8024 | 0.0971 | 0.00027 | 2.0726 | 0.1049 | 2.3380 |
| 1998 | 3.0863817 | –0.4780 | 0.0361 | 0.00093 | 0.1383 | 0.0208 | 0.2390 |
| 2132 | 4.6823873 | 4.3943 | 0.1194 | 0.00179 | 0.3518 | 0.0424 | 1.9623 |
| 2180 | 2.5877856 | 0.2258 | 0.0751 | 0.00047 | 0.6269 | 0.0784 | 0.7883 |
| 2191 | 4.2070310 | –0.7288 | 0.1555 | 0.00061 | 1.6074 | 0.1469 | 2.2116 |
| 2289 | 3.7126964 | –0.3231 | 0.0532 | 0.00105 | 0.3232 | 0.0312 | 0.6197 |
| 2470 | 3.2211085 | –0.5983 | 0.0510 | 0.00134 | 0.1886 | 0.0220 | 0.4847 |
| FO Cepheids with twin peaks | |||||||
| 1405 | 2.7807164 | –1.7996 | 0.1021 | 0.00027 | 1.6874 | 0.1284 | 1.9035 |
| 1521 | 3.2147769 | 4.0352 | 0.1497 | 0.00054 | 1.2717 | 0.1323 | 1.6710 |
| 1527 | 1.4923973 | –2.8863 | 0.0742 | 0.00039 | 1.8818 | 0.0858 | 2.2687 |
| 1535 | 1.2509786 | –0.6089 | 0.1356 | 0.00074 | 2.1608 | 0.1326 | 3.2261 |
| 1536 | 1.6112568 | –0.4181 | 0.3225 | 0.00039 | 3.3492 | 0.4349 | 4.0378 |
| 1561 | 1.5299801 | 0.0068 | 0.0478 | 0.00042 | 0.4888 | 0.0487 | 0.5975 |
| 1564 | 2.0629824 | 0.1446 | 0.0572 | 0.00088 | 0.5573 | 0.0397 | 0.9268 |
| 1605 | 3.0881609 | –0.0018 | 0.0984 | 0.00059 | 1.3976 | 0.0836 | 1.8933 |
| 1693 | 1.6639538 | –0.2544 | 0.0449 | 0.00130 | 0.2006 | 0.0173 | 0.4923 |
| 1704 | 1.8820681 | 2.4560 | 0.1133 | 0.00025 | 1.0959 | 0.1380 | 1.2205 |
| 2118 | 2.4461347 | –0.7408 | 0.0499 | 0.00037 | 1.0945 | 0.0641 | 1.3017 |
| 2217 | 2.3120543 | –7.7622 | 0.0872 | 0.00029 | 3.9691 | 0.1196 | 4.5357 |
| FO Cepheids with visible changing amplitudes | |||||||
| 0916 | 1.3695732 | 0.9550 | 0.1352 | 0.00039 | 2.0659 | 0.0972 | 2.4928 |
| 1119 | 1.7431985 | –3.5252 | 0.5765 | 0.00079 | 4.2670 | 0.4105 | 6.6101 |
| 1275 | 0.9474017 | –0.6110 | 0.0696 | 0.00039 | 2.2950 | 0.0997 | 2.7668 |
| 1955 | 1.8879224 | –1.0391 | 0.1135 | 0.00108 | 0.7389 | 0.0670 | 1.4485 |
| 2820 | 2.1127656 | –0.3327 | 0.0585 | 0.00031 | 1.5344 | 0.0673 | 1.7731 |
| FU Cepheids without twin peaks | |||||||
| 0727 | 14.4891397 | 2.8043 | 0.5326 | 0.00100 | 2.5372 | 0.3123 | 4.6316 |
| 1514 | 3.0459183 | –0.0255 | 0.0379 | 0.00108 | 0.2073 | 0.0210 | 0.4063 |
| 1543 | 4.3781838 | –0.3817 | 0.1886 | 0.00074 | 1.4589 | 0.1237 | 2.1782 |
| 1559 | 3.6469543 | –0.1060 | 0.0510 | 0.00100 | 0.2689 | 0.0283 | 0.4941 |
| 1711 | 2.9189534 | –0.3011 | 0.1125 | 0.00162 | 0.3383 | 0.0391 | 1.3053 |
| 1753 | 2.5745626 | –0.0868 | 0.0290 | 0.00132 | 0.1232 | 0.0142 | 0.3111 |
| 2215 | 3.2408617 | 0.0805 | 0.0524 | 0.00074 | 0.3104 | 0.0435 | 0.4635 |
| 2229 | 4.8745455 | 0.0386 | 0.0377 | 0.00098 | 0.1970 | 0.0239 | 0.3545 |
| 2264 | 3.8808875 | –0.1143 | 0.0630 | 0.00083 | 0.6172 | 0.0447 | 0.9889 |
| 2500 | 3.2002470 | 0.1430 | 0.0321 | 0.00126 | 0.2428 | 0.0149 | 0.5703 |
| 2580 | 2.9569833 | 0.2428 | 0.0490 | 0.00084 | 0.2566 | 0.0196 | 0.4143 |
| 2774 | 3.8131712 | 0.6247 | 0.1062 | 0.00144 | 0.2607 | 0.0393 | 0.7664 |
| FO Cepheids without twin peaks | |||||||
| 1582 | 0.3187867 | –0.0053 | 0.0109 | 0.00061 | 0.1101 | 0.0104 | 0.1516 |
| 1638 | 2.3630077 | –0.0488 | 0.5678 | 0.00140 | 1.7129 | 0.2142 | 4.7344 |
| 1671 | 1.3642921 | –0.0081 | 0.0420 | 0.00147 | 0.2010 | 0.0172 | 0.6135 |
| 1698 | 1.5955712 | 0.0812 | 0.0537 | 0.00113 | 0.1722 | 0.0248 | 0.3533 |
| 1754 | 0.7113208 | –0.0100 | 0.0118 | 0.00125 | 0.0423 | 0.0044 | 0.0979 |
| 1772 | 0.9471192 | –0.0767 | 0.0105 | 0.00123 | 0.0737 | 0.0056 | 0.1670 |
| 1838 | 1.6431880 | –0.1005 | 0.0306 | 0.00127 | 0.1370 | 0.0152 | 0.3270 |
| 1911 | 0.7485379 | 0.0311 | 0.0126 | 0.00130 | 0.0578 | 0.0052 | 0.1418 |
| 1937 | 1.0593254 | 0.0085 | 0.0163 | 0.00142 | 0.0708 | 0.0061 | 0.2020 |
| 2103 | 0.3913544 | 0.3939 | 0.0880 | 0.00189 | 0.1347 | 0.0336 | 1.0074 |
| 2310 | 1.2713288 | 0.0863 | 0.0370 | 0.00044 | 0.3485 | 0.0387 | 0.4321 |
| 2977 | 0.4956663 | 0.0098 | 0.0161 | 0.00102 | 0.1089 | 0.0079 | 0.2033 |
Notes. P: pulsation period (in days); βP, fP and ΔP: trend, oscillation frequency and oscillation amplitude of the pulsation period (see Sect. 4.1); 
and σΔP: standard errors of βP and ΔP; ΔPc: the bias-corrected estimate of the amplitude of the period modulation.
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