I am trying to create an app which consumes data from http://apigobiernoabiertortod.valencia.es/apirtod/datos/intensidad_tramos.json.
The JSON files offer the coordinates for me. However, I cannot figure out what are the latitude and longitude of these coordinates. I only know that the coordinates are located in the Valencia city (Spain), but when I use this site to convert the coordinates it is pointing to a different location.
I searched a little bit and I have discovered that there is a lot of types of conversions. How do I know the correct formula to convert these raw coordinate values?