Sample dataset containing an instantaneous complex wave function field obtained from a three-dimensional generalised Gross-Pitaevskii simulation. The dataset is split into two files: one for the real part, and the other for the imaginary part of the wave function field \(\psi(x, y, z)\). The dataset resolution is \(256^3\) grid points. The data is encoded as raw binary data, written in little-endian order, in double precision (64-bit floating point precision).