Data collection was performed with the Helios collection software, data pre-processing in Surface Explorer, while global and target data analyses were performed using the Glotaran graphical user interface to the R-package TIMP software. The full multidimensional data set for low intensity TAS experiments for Cyd was globally fit using a three component sequential kinetic model, whereas a two component sequential kinetic model was used for 5mCyd. The high intensity transient absorption data was cropped from 430-700 nm and then globally fit using the same kinetic modeling from the low intensity TAS. All kinetic fits were convoluted with a Gaussian instrument response function of 250 ± 50 fs (FWHM). The evolution associated difference spectra (EADS) were extracted from the global and target analysis. 9-11