Table 5.

Summary statistics.

Variable	Observations	Mean	Maxi	Mini	Stand Dev.
Carbon/×104 Ton	242	0.614	1.816	0.102	0.246
TBP	242	1.428	24.642	0	4.201
TPP	242	1.824	21.88	0	2.218
GDP/×1012 Yuan	242	2.424	2.840	0.021	0.661
POP/×107 Person	242	0.422	1.142	0.242	0.212
RDI/×1012 Yuan	242	0.144	1.168	0.026	0.212
EDR	242	6.11	42.2	0	11.18
PCT/×109 Ton	242	2.828	11.261	1.648	2.148
DTA	242	1.226	1.884	0.612	0.204