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\begin{longtable}{>{\raggedright\arraybackslash}p{0.23\textwidth}c r r r r c}
\caption{Strict nine-route public-data screening metrics at the 500 m baseline}\label{tab:strictroutemetrics}\\
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Route & Grade & \shortstack{Sensitive\\per km$^2$} & \shortstack{Facility /\\service opp.} & \shortstack{WorldPop 2020\\(000s)} & \shortstack{GHSL 2025\\(000s)} & \shortstack{Selection\\A / R} \\
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\multicolumn{7}{c}{\tablename\ \thetable\ -- continued} \\
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Route & Grade & \shortstack{Sensitive\\per km$^2$} & \shortstack{Facility /\\service opp.} & \shortstack{WorldPop 2020\\(000s)} & \shortstack{GHSL 2025\\(000s)} & \shortstack{Selection\\A / R} \\
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003 Talent Park & A & 3.00 & 0.125 & 4.0 & 14.3 & 0.00 / 0.00 \\
005 Central Park & A & 1.39 & 0.211 & 22.1 & 12.4 & 0.00 / 0.00 \\
007 Longhua Tianjun & B & 6.42 & 0.213 & 13.0 & 19.9 & 0.98 / 0.00 \\
008 Longhua Zhihui & B & 6.70 & 0.783 & 43.5 & 45.4 & 1.00 / 1.00 \\
009 Longhua Hbc & B & 4.91 & 0.222 & 15.5 & 17.2 & 0.01 / 0.00 \\
012 Medical Longhua Street To Hospital & A & 5.21 & 0.529 & 104.4 & 103.8 & 0.03 / 1.00 \\
019 Bay North Harbor & A & 1.58 & 0.106 & 18.8 & 25.7 & 0.00 / 0.00 \\
020 Luohu Cuihu & A & 4.17 & 0.692 & 82.2 & 84.5 & 0.01 / 1.00 \\
021 Futian Port & B & 6.71 & 0.271 & 207.6 & 176.8 & 0.98 / 0.00 \\
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\multicolumn{7}{p{0.97\textwidth}}{\footnotesize Notes: All rows have coordinate status \texttt{usable\_for\_prototype}. Facility density uses total 500 m buffer area. Facility/service opportunity is $(H+1)/(B+1)$. Selection A/R reports fixed-seed absolute/relative top-three frequency under 75 m coordinate jitter. GHSL 2025 is an alternative projected-population model, not independent validation.} \\
\end{longtable}
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