## 2 Materials and Methods
### Data Processing
\begin{table}
\begin{tabular}{c c c c} \hline \hline
**Variable** & **Database** & **Institution** & **URL (All Data Was Accessed on 20 February 2021)** \\ \hline Municipalities & INEGI & INEGI & [[https://www.inegi.org.mx/app/biblioteca/fficha.html?upc=702825218867](https://www.inegi.org.mx/app/biblioteca/fficha.html?upc=702825218867)]([https://www.inegi.org.mx/app/biblioteca/fficha.html?upc=702825218867](https://www.inegi.org.mx/app/biblioteca/fficha.html?upc=702825218867)) \\ Blocks & INEGI & INEGI & [[https://www.inegi.org.mx/app/biblioteca/ficha.html?upc=702825218867](https://www.inegi.org.mx/app/biblioteca/ficha.html?upc=702825218867)]([https://www.inegi.org.mx/app/biblioteca/ficha.html?upc=702825218867](https://www.inegi.org.mx/app/biblioteca/ficha.html?upc=702825218867)) \\ AGEBs & INEGI & INEGI & [[https://www.inegi.org.mx/app/biblioteca/ficha.html?upc=702825218867](https://www.inegi.org.mx/app/biblioteca/ficha.html?upc=702825218867)]([https://www.inegi.org.mx/app/biblioteca/ficha.html?upc=702825218867](https://www.inegi.org.mx/app/biblioteca/ficha.html?upc=702825218867)) \\ DENUE & DENUE & INEGI & [[https://www.inegi.org.mx/app/descarga/default.html](https://www.inegi.org.mx/app/descarga/default.html)]([https://www.inegi.org.mx/app/descarga/default.html](https://www.inegi.org.mx/app/descarga/default.html)) \\ Roads & OSM & OSMF & [[https://www.openstreetmap.org/#map=10/24.6488/-100.5263](https://www.openstreetmap.org/#map=10/24.6488/-100.5263)]([https://www.openstreetmap.org/#map=10/24.6488/-100.5263](https://www.openstreetmap.org/#map=10/24.6488/-100.5263)) \\ \hline \end{tabular}
\end{table} 
Table 1: Databases and URLs of the used resources in this study. a 15 min travel time, the distance and time to the nearest public school (including all levels from preschool to high school), and nearest hospital (including codes 622112, 622212 and 622312). For the Distrito Tec's analysis, the computations were: number of employment centres with 51 or more employees accessible within a 15 min travel time, the number of retail trade supermarkets available within a 15 min travel time, and the time required to access the five nearest schools or hospitals; here, an individual study was conducted for each category mentioned in Table 2.  
The aforementioned measurements were evaluated under the following (see Table 3) criteria, which were determined in compliance with each transport mode's average speed (according to UrMoAC) and the cumulative opportunity accessibility metric (where more opportunities in the surroundings relate to higher accessibility levels) [17]. It is important to highlight the complexity of a standardised rating scale for the number of destinations reachable within a specific time or distance, when comparing different services, as socio-economic and demographic features must be considered to develop an accurate measurement. Therefore, the current research project performed a preliminary approach and diagnosis by evaluating the number of destinations available within a 15 min travel time either by bicycle or walking. Comparisons of accessibility across different services were not evaluated.