This folder contains the data used in the published manuscript. 
The details follow.

Folder: Polarisation measurement
Data analysed to produce Figure 2 (d). These are txt files with wavelength (nm) and power spectral density (arb. units). the file name indicates the polariser angle. 

Folder: Pump spectrum
This folder contains the data plotted in fig 1 (d). The files are CSV with on one raw the wavelength (nm) and on the other the power spectral density (arb. units). HE refers to the high energy case while LE to the low energy case.

Folder: THz electric field
Data used for Fig.3 (d). CSV files with on one raw the time axis in ps and on the other the measured THz electric field amplitude (arbitrary units).

Folder: Spectrogram.
Data used to build Fig. 3 (a) and (b). These are tiff files recorded from the imaging spectrometer. The time axis is in steps of 5 fs for the N26, and of 10 fs for N27. The file L is a CSV with the wavelength axis in nm.