Read me for Ridgecrest site database

Column: 
1 - network code
2 - station code
3 - station latitude
4 - station longitude
5 - station elevation (m)
6 - Vs30 value (m/s)
7 - Vs30 code, where 
       0 = measured as reported by Yong, A., Martin, A., Stokoe, K., and Diehl, J., (2013), ARRA-funded VS30 measurements using multi-technique approach at strong-motion stations in California and central-eastern United States, U.S. Geological Survey Open-File Report 2013-1102, 60 p.
       1 = based on the mosaic proxy, Heath, D. C., Wald, D. J., Worden, C. B., Thompson, E. M., and Smoczyk, G. M. (2020). A global hybrid VS30 map with a topographic slope–based default and regional map insets. Earthquake Spectra. https://doi.org/10.1177/8755293020911137