Metadata of QuartzEOS_exp_data_fig.zip Experimental method: Electrooptic Sampling Location of the experiment: Fritz Haber Institute, Faradayweg 4-6, 14195 Berlin, Department of Physical Chemistry, Research Group THz Structural Dynamics Date of the experiment: June 2020 - June 2023 Related publication and description of experiment: https://doi.org/10.1364/OPTICA.515909 Data format Each .txt file has two header lines (1st line overall description of file, 2nd line to describe measured observables and their units). Data is stored as two tab delimited columns with double float precision.