  We present experimental results on eigenfunctions of a wave chaotic system in
the continuous crossover regime between time-reversal symmetric and
time-reversal symmetry-broken states. The statistical properties of the
eigenfunctions of a two-dimensional microwave resonator are analyzed as a
function of an experimentally determined time-reversal symmetry breaking
parameter. We test four theories of one-point eigenfunction statistics and
introduce a new theory relating the one-point and two-point statistical
properties in the crossover regime. We also find a universal correlation
between the one-point and two-point statistical parameters for the crossover
eigenfunctions.
