  Electroweak measurements performed with data taken at the electron-positron
collider LEP at CERN from 1995 to 2000 are reported. The combined data set
considered in this report corresponds to a total luminosity of about 3
fb$^{-1}$ collected by the four LEP experiments ALEPH, DELPHI, L3 and OPAL, at
centre-of-mass energies ranging from 130 GeV to 209 GeV.
  Combining the published results of the four LEP experiments, the measurements
include total and differential cross-sections in photon-pair, fermion-pair and
four-fermion production, the latter resulting from both double-resonant WW and
ZZ production as well as singly resonant production. Total and differential
cross-sections are measured precisely, providing a stringent test of the
Standard Model at centre-of-mass energies never explored before in
electron-positron collisions. Final-state interaction effects in four-fermion
production, such as those arising from colour reconnection and Bose-Einstein
correlations between the two W decay systems arising in WW production, are
searched for and upper limits on the strength of possible effects are obtained.
The data are used to determine fundamental properties of the W boson and the
electroweak theory. Among others, the mass and width of the W boson, $M_W$ and
$\Gamma_W$, the branching fraction of W decays to hadrons,
$B(W\to\mathrm{had})$, and the trilinear gauge-boson self-couplings $g^Z_1$,
$\kappa_\gamma$ and $\lambda_\gamma$ are determined to be:
  M_W = 80.376 \pm 0.033 ~GeV
  \Gamma_W = 2.195 \pm 0.083 ~GeV
  B(W\to\mathrm{had}) = 67.41 \pm 0.27 % g^Z_1 = 0.984 ^{+0.018}_{-0.020}
  \kappa_\gamma = 0.982 \pm 0.042
  \lambda_\gamma = -0.022 \pm 0.019
