\begin{table}[H]
\centering
\begin{threeparttable}
\caption{Published fiscal gradients across six Shenzhen reward schedules}
\label{tab:fiscalgradients}
\scriptsize
\setlength{\tabcolsep}{3.1pt}
\begin{tabularx}{0.98\textwidth}{>{\raggedright\arraybackslash}p{0.20\textwidth}>{\raggedright\arraybackslash}p{0.19\textwidth}rrrr}
\toprule
Policy & Design & \shortstack{Route award\\(CNY)} & \shortstack{Threshold average\\(CNY/flight)} & \shortstack{Operating rate\\(CNY/flight)} & \shortstack{Enterprise cap\\(CNY)} \\
\midrule
Shenzhen city (2025) & Route + block & 200k/350k & 40/350 & 20/40 & 20m \\
Nanshan (2024) & Route + per-flight & 200k/350k & 200/700 & 20/40 & 2m/3.5m/10m \\
Longhua (2023) & Per-flight & -- & -- & 35/50 & 10m \\
Longgang (2024) & Route + per-flight & 200k & 40 & 25/50 & 10m \\
Guangming (2026) & Route + per-flight & 150k/250k & 100/312.5 & 20/30 & 8m \\
Dapeng (2025) & Per-flight & -- & -- & 20/40 & 1m/2m \\
\bottomrule
\end{tabularx}
\begin{tablenotes}
\footnotesize
\item Notes: Slash-separated values denote aircraft or eligibility tiers. ``Threshold average'' divides a one-time route award by the minimum qualifying flights and is not a recurring marginal rate. For a joint Shenzhen city claim, flights used to meet the new-route threshold must be deducted before the 20,000-flight block reward is calculated. Published schedules identify incentive geometry, not operator response or welfare effects.
\end{tablenotes}
\end{threeparttable}
\end{table}