Full WideX spectrum of W3(H₂O) averaged over a 4′′ × 4′′ region encompassing two cores, W3(H₂O) E and W3(H₂O) W, showing the chemical richness of the source. The coverage of the narrow-band correlator units are shown as horizontal green lines and labelled accordingly. The units of the spectrum have been converted from Jy beam⁻¹ to K by multiplying the flux by 188 K Jy⁻¹ under the Rayleigh–Jeans approximation.