## 2 Materials and Methods
### Exposure Monitoring
\begin{table}
\begin{tabular}{l l l l l l l} \hline \hline \multirow{2}{*}{**Location**} & \multirow{2}{*}{**Date**} & \multicolumn{2}{l}{**Baremetric**} & \multirow{2}{*}{**Humidity**} & \multicolumn{2}{l}{**Wind**} & \multirow{2}{*}{**Temperature**} & \multirow{2}{*}{**Wind**} \\  & & **Pressure** & & & **Speed** & **(mph)** & **(\({}^{\circ}\)F)** & **Direction** \\ \hline Beechurst & 7 August & \multirow{2}{*}{29.84} & \multirow{2}{*}{90\%} & \multirow{2}{*}{1} & \multirow{2}{*}{69} & \multirow{2}{*}{East} \\ Avenue & 2024 & & & & & & \\ \hline Beechurst & 8 August & \multirow{2}{*}{29.85} & \multirow{2}{*}{85\%} & \multirow{2}{*}{0} & \multirow{2}{*}{73} & \multirow{2}{*}{East} \\ Avenue & 2024 & & & & & \\ \hline Beechurst & 12 August & \multirow{2}{*}{30.09} & \multirow{2}{*}{93\%} & \multirow{2}{*}{3} & \multirow{2}{*}{54} & \multirow{2}{*}{East} \\ Avenue & 2024 & & & & & \\ \hline Beechurst & 13 August & \multirow{2}{*}{30.05} & \multirow{2}{*}{79\%} & \multirow{2}{*}{0} & \multirow{2}{*}{63.3} & \multirow{2}{*}{East} \\ Avenue & 2024 & & & & & \\ \hline Beechurst & 14 August & \multirow{2}{*}{30} & \multirow{2}{*}{93\%} & \multirow{2}{*}{0.1} & \multirow{2}{*}{54.9} & \multirow{2}{*}{East} \\ Avenue & 2024 & & & & & \\ \hline Beechurst & 15 August & \multirow{2}{*}{30.04} & \multirow{2}{*}{93\%} & \multirow{2}{*}{0} & \multirow{2}{*}{57.2} & \multirow{2}{*}{East} \\ Avenue & 2024 & & & & & \\ \hline Brockway & 19 August & \multirow{2}{*}{29.89} & \multirow{2}{*}{89\%} & \multirow{2}{*}{0.5} & \multirow{2}{*}{67} & \multirow{2}{*}{South} \\ Avenue & 2024 & & & & & \\ \hline Brockway & 20 August & \multirow{2}{*}{29.72} & \multirow{2}{*}{95\%} & \multirow{2}{*}{1.5} & \multirow{2}{*}{67} & \multirow{2}{*}{South} \\ Avenue & 2024 & & & & & \\ \hline Brockway & 21 August & \multirow{2}{*}{29.93} & \multirow{2}{*}{88\%} & \multirow{2}{*}{1.3} & \multirow{2}{*}{59} & \multirow{2}{*}{South} \\ Avenue & 2024 & & & & & \\ \hline Brockway & 23 August & \multirow{2}{*}{30.1} & \multirow{2}{*}{96\%} & \multirow{2}{*}{0.4} & \multirow{2}{*}{46} & \multirow{2}{*}{South} \\ Avenue & 2024 & & & & & \\ \hline Brockway & 27 August & \multirow{2}{*}{30.18} & \multirow{2}{*}{97\%} & \multirow{2}{*}{0} & \multirow{2}{*}{64} & \multirow{2}{*}{South} \\ Avenue & 2024 & & & & & \\ \hline Brockway & 19 August & \multirow{2}{*}{30.2} & \multirow{2}{*}{99\%} & \multirow{2}{*}{0} & \multirow{2}{*}{65.8} & \multirow{2}{*}{South} \\ Avenue & 2024 & & & & & \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Weather information for Beechurst Avenue and Brockway Avenue locations (all sampling conducted was under dry atmospheric conditions only). globally. The high sensitivity enabled us to detect concentrations of ultrafine particles, which was crucial for the precise evaluation of air quality at each site. The NanoScan is also able to capture and measure a wide range of particle sizes using 13 size bins and allows for real-time data collection, which is an essential component of ultrafine particle concentration analysis [40]. According to [PERSON] et al., the model can measure particles as small as 10 nm in diameter all the way to 420 nm in diameter, which makes it a suitable instrument for UFP classification and concentration measurement [41]. The NanoScan's dynamic range enables it to accommodate various particle sizes and concentrations, including the measurement of the ultrafine particle concentrations required in this study [40]. The NanoScan has the ability to isolate the counts from one size bin to be used as the prime indicator of total UFP exposure. These are graphed as \"counts\" for the sum of all the bin sizes if no bin size is specified, or, for select sizes, the particle size of the selected bin that was used is appended to the \"count\" title. In theory, a total count could be calculated from the counts in a single bin if the size distribution can be assumed to remain constant, which was not investigated here.