\begin{table}%t3 %%\centering \par \caption{\label{tab3}Previously published, reanalysed, and new mid-eclipse times of the white dwarf in NN~Ser with residuals for the light-travel-time effect produced by the two planets of Model 2a. } \begin{tabular}{r@{\hspace{8mm}}c@{\hspace{8mm}}c@{\hspace{8mm}}c@{\hspace{6mm}}r@{\hspace{6mm}}r@{\hspace{6mm}}c@{\hspace{6mm}}l} \hline \hline\noalign{\smallskip} $E$ & BJD(TT) & Error & Residual & Error & Residual & References & Comment \\ & JD 2~400~000$+$&(days) & (days) & (s) & (s) \\ \hline 0 & 47~344.5246635 & 0.0003500 & 0.0000290 & 30.00 & 2.51 & (1) & Reanalysed\\ 2760 & 47~703.5457436 & 0.0000020 & 0.0000012 & 0.17 & 0.10 & (2) & \\ 2761 & 47~703.6758326 & 0.0000060 & 0.0000101 & 0.52 & 0.87 & (2) & \\ 2769 & 47~704.7164596 & 0.0000030 & \hspace{-2.0mm}$-$0.0000038 & 0.26 & \hspace{-2.0mm}$-$0.33 & (3) & \\ 2776 & 47~705.6270226 & 0.0000030 & \hspace{-2.0mm}$-$0.0000016 & 0.26 & \hspace{-2.0mm}$-$0.14 & (3) & \\ 2777 & 47~705.7571046 & 0.0000070 & 0.0000003 & 0.60 & 0.03 & (3) & Corrected\\ 2831 & 47~712.7815836 & 0.0001500 & 0.0001534 & 12.96 & 13.25 & (2) & \\ 2839 & 47~713.8222336 & 0.0001500 & 0.0001625 & 12.96 & 14.04 & (2) & \\ 7360 & 48~301.9141954 & 0.0001500 & \hspace{-2.0mm}$-$0.0000627 & 12.96 & --5.42 & (2) & \\ 28~152 & 51~006.5405495 & 0.0002000 & 0.0000605 & 17.28 & 5.23 & (2) & \\ 30~721 & 51~340.7165402 & 0.0000023 & \hspace{-2.0mm}$-$0.0000004 & 0.20 & \hspace{-2.0mm}$-$0.03 & (2) & Reanalysed\\ 33~233 & 51~667.4780058 & 0.0000960 & 0.0000041 & 8.29 & 0.35 & (4) & Reanalysed\\ 38~960 & 52~412.4470566 & 0.0000006 & \hspace{-2.0mm}$-$0.0000006 & 0.05 & \hspace{-2.0mm}$-$0.05 & (5) & \\ 38~961 & 52~412.5771382 & 0.0000005 & 0.0000008 & 0.04 & 0.07 & (5) & \\ 38~968 & 52~413.4876977 & 0.0000009 & \hspace{-2.0mm}$-$0.0000006 & 0.08 & \hspace{-2.0mm}$-$0.05 & (5) & Corrected\\ 38~976 & 52~414.5283389 & 0.0000007 & \hspace{-2.0mm}$-$0.0000004 & 0.06 & \hspace{-2.0mm}$-$0.03 & (5) & \\ 38~984 & 52~415.5689804 & 0.0000007 & 0.0000000 & 0.06 & 0.00 & (5) & \\ 41~782 & 52~779.5331703 & 0.0000015 & 0.0000001 & 0.13 & 0.01 & (5) & \\ 41~798 & 52~781.6144523 & 0.0000007 & 0.0000002 & 0.06 & 0.02 & (5) & \\ 41~806 & 52~782.6550927 & 0.0000008 & \hspace{-2.0mm}$-$0.0000004 & 0.07 & \hspace{-2.0mm}$-$0.03 & (5) & \\ 41~820 & 52~784.4762150 & 0.0000008 & 0.0000003 & 0.07 & 0.03 & (5) & \\ 44~472 & 53~129.4486808 & 0.0000040 & 0.0000008 & 0.35 & 0.07 & (5) & \\ 44~473 & 53~129.5787632 & 0.0000028 & 0.0000031 & 0.24 & 0.27 & (5) & \\ 44~474 & 53~129.7088370 & 0.0000017 & \hspace{-2.0mm}$-$0.0000032 & 0.15 & \hspace{-2.0mm}$-$0.28 & (5) & \\ 44~480 & 53~130.4893234 & 0.0000030 & 0.0000025 & 0.26 & 0.22 & (5) & \\ 49~662 & 53~804.5644567 & 0.0000025 & 0.0000001 & 0.22 & 0.01 & (5) & \\ 49~663 & 53~804.6945350 & 0.0000012 & \hspace{-2.0mm}$-$0.0000017 & 0.10 & \hspace{-2.0mm}$-$0.15 & (5) & \\ 49~671 & 53~805.7351781 & 0.0000006 & 0.0000005 & 0.05 & 0.04 & (5) & \\ 53~230 & 54~268.6903114 & 0.0000006 & 0.0000008 & 0.05 & 0.07 & (5) & \\ 53~237 & 54~269.6008713 & 0.0000002 & \hspace{-2.0mm}$-$0.0000001 & 0.02 & \hspace{-2.0mm}$-$0.01 & (5) & \\ 56~442 & 54~686.5076279 & 0.0000009 & \hspace{-2.0mm}$-$0.0000001 & 0.08 & \hspace{-2.0mm}$-$0.01 & (5) & \\ 58~638 & 54~972.1634971 & 0.0000800 & \hspace{-2.0mm}$-$0.0000380 & 6.91 & --3.28 & (6) & \\ 58~645 & 54~973.0740553 & 0.0001000 & \hspace{-2.0mm}$-$0.0000406 & 8.64 & --3.51 & (6) & \\ 58~684 & 54~978.1471791 & 0.0001200 & \hspace{-2.0mm}$-$0.0000408 & 10.37 & --3.53 & (6) & \\ 58~745 & 54~986.0820789 & 0.0001200 & \hspace{-2.0mm}$-$0.0000274 & 10.37 & --2.37 & (6) & \\ 58~753 & 54~987.1228359 & 0.0001300 & 0.0000887 & 11.23 & 7.66 & (6) & \\ 58~796 & 54~992.7161925 & 0.0000015 & 0.0000008 & 0.13 & 0.07 & (6) & \\ 60~489 & 55~212.9418187 & 0.0000069 & 0.0000027 & 0.60 & 0.23 & (7,8) & \\ 60~505 & 55~215.0230961 & 0.0000066 & \hspace{-2.0mm}$-$0.0000017 & 0.57 & \hspace{-2.0mm}$-$0.15 & (7,8) & \\ 60~528 & 55~218.0149380 & 0.0000043 & \hspace{-2.0mm}$-$0.0000024 & 0.37 & \hspace{-2.0mm}$-$0.21 & (7,8) & \\ 60~735 & 55~244.9415254 & 0.0000029 & 0.0000012 & 0.25 & 0.10 & (7,8) & \\ 60~743 & 55~245.9821654 & 0.0000032 & 0.0000003 & 0.28 & 0.03 & (7,8) & \\ 60~751 & 55~247.0228063 & 0.0000034 & 0.0000002 & 0.29 & 0.02 & (7,8) & \\ 60~774 & 55~250.0146469 & 0.0000034 & \hspace{-2.0mm}$-$0.0000018 & 0.29 & \hspace{-2.0mm}$-$0.16 & (7,8) & \\ 60~927 & 55~269.9169047 & 0.0000014 & \hspace{-2.0mm}$-$0.0000018 & 0.12 & \hspace{-2.0mm}$-$0.16 & (7,9) & \\ 60~950 & 55~272.9087487 & 0.0000013 & \hspace{-2.0mm}$-$0.0000005 & 0.11 & \hspace{-2.0mm}$-$0.04 & (7,9) & \\ 61~219 & 55~307.9003015 & 0.0000010 & 0.0000005 & 0.09 & 0.04 & (7,10) & \\ 61~426 & 55~334.8268834 & 0.0000018 & \hspace{-2.0mm}$-$0.0000025 & 0.16 & \hspace{-2.0mm}$-$0.22 & (7,9) & \\ 61~440 & 55~336.6480059 & 0.0000018 & \hspace{-2.0mm}$-$0.0000017 & 0.16 & \hspace{-2.0mm}$-$0.15 & (7,9) & \\ 61~441 & 55~336.7780894 & 0.0000015 & 0.0000017 & 0.13 & 0.15 & (7,9) & \\ 61~564 & 55~352.7779443 & 0.0000016 & 0.0000017 & 0.14 & 0.15 & (7,9) & \\ 61~579 & 55~354.7291448 & 0.0000009 & 0.0000004 & 0.08 & 0.03 & (7,10) & \\ \hline \end{tabular} \tablefoot{The published mid-eclipse times have been converted to BJD(TT) if not yet on this time standard.}\vspace{-2mm} \tablebib{(1) Haefner et~al. (1989); ESO Msngr, 55, 61, reanalysed using up-to-date eclipse profile; (2) \cite{haefneretal04}, misprint for $E=2777$ corrected, VLT trailed imaging observation ($E=30721$) reanalysed using the original data; (3)~\cite{wood91}; (4)~\cite{pigulskimachalska02}, reanalysed using the original data; (5)~\cite{parsonsetal10b}, timing for $E=38~968$ corrected for misprint; (6)~\cite{qianetal09}; (7)~this work; (8)~MONET/North 1.2-m white light photometry; (9)~McDonald 2.1-m photometry with Schott $BG40$~filter; (10)~ESO NTT 3.5-m ULTRACAM Sloan $g'$ photometry.} \end{table}