When reusing this dataset, please cite the original publication, 
which contains the associated background information:  
                  
   Witvliet, Ben A., et al. Impact of a Solar X-Flare on NVIS 
   Propagation: Daytime characteristic wave refraction and    
   nighttime scattering. IEEE Ant.& Prop. Mag. 58.6 (2016). 

When resusing this code, please acknowledge the original author.
Code: Matlab 2021b Update 1 (Nov. 2021)