Name: M B Syed Nawazuddin
Institution: Optoelectronics Research Centre, University of Southampton.
Contact E-mail: m.b.syed-nawazuddin@soton.ac.uk

Data set file 1: "Data_plots_JLT_21409-2017.xlsx" contains 5 sheets each named after the Figure number corresonding to those published in the paper. The file contains data for both "X" and "Y" for plots in Figures: 5, 7, 8, 9, and 11. 

Data set file 2: "Data_Figure10_23m-S2_JLT_21409-2017.xlsx" contains raw data for the short length S2 measurement in Figure 10 in the paper.

Data set file 3: "Data_Figure10_76m-S2_JLT_21409-2017.xlsx" contains raw data for the long length S2 measurement in Figure 10 in the paper.

Date of data collection: February 2017 to October 2017
Date of creation of data file: December 2017

Information about geographic location of data collection: University of Southampton, U.K.