discovery of a new disappearance of reactor antineutrinos at 5.2 standard deviations ($\,\sigma$) and measured $\sin^22\theta_{13}=0.092\pm0.016{\rm (stat)}\pm0.005{\rm (syst)}$ with 55 days data [@DB_discovery]. It was further verified at 7.7$\,\sigma$ with 139 days of data [@DB_CPC] and at 4.6$\,\sigma$ with a statistically independent data set using antineutrino events tagged by neutron capture on hydrogen [@DB_nH].

The six-detector phase terminated on 28 July 2012. The last two ADs were installed. The full configuration of the Daya Bay experiment started data taking on 19 October 2012, running reliably to present. Two additional results on neutrino oscillation were reported subsequently. With all 217 days of data acquired in the first phase, a spectral and rate analysis improved the precision of $\theta_{13}$ and measured the effective mass splitting $\Delta m^2_{ee}$ for the first time [@DB_spectana]. A new analysis with 621 days of data, including the 6-AD phase and the full 8-AD configuration, was released recently; the measured $\sin^22\theta_{13}$ has reached a precision of 6% [@DB_2015]. These results are summarized in Table \[tab:sens\].

         Release time            Data       Config       $\sin^22\theta_{13}$        $\Delta m^2_{ee} $
  --------------------------- ---------- ------------ --------------------------- ------------------------
   2012/3/8 [@DB_discovery]    55 days      6 ADs       $0.092\pm0.016\pm0.005$              -
     2012/10/23 [@DB_CPC]      139 days     6 ADs       $0.089\pm0.010\pm0.005$              -
   2013/10/24 [@DB_spectana]   217 days     