Figure 2. Photon energy prediction for a single pulse.

(a) Two samples of single-shot spectra at two different photon energies measured with the optical spectrometer (light red, light blue) and the corresponding Gaussian fits (thick red, thick blue). (b) Distribution of the measured photon energies for the dataset. Mean error of distribution: 5.6 eV. (c) Measured photon energies compared to the predicted photon energies for the test set using a linear model. Experimental points are shown in blue. The perfect correlation line is included for reference as a black dashed line. Mean error of predictions: 0.29 eV.