Export waveform as text file?

I would like to export an audio waveform that I captured with Audacity as a text file, i.e. columns of amplitudes and times (not a wav or mp3 file). This can be done, for instance, with Audacity’s “Plot Spectrum” output, where the file created has columns of amplitudes and frequencies. Can the same thing be done with waveforms?

Forgot to mention - I’m using Audacity 2.4.2.