Table 2.

Spatial accessibility of seven ecological conservation districts.

Spatial Accessibility	Max	Min	Median	Q1 a	Q3 a
Changping	84.91	<0.01	1.93	0.16	5.09
Fangshan	6.35	0.18	2.27	1.34	3.33
Huairou	5.05	<0.01	1.97	<0.01	2.61
Mentougou	69.36	<0.01	0.69	0.01	2.29
Miyun	46.95	<0.01	0.27	<0.01	1.74
Pinggu	6.48	<0.01	1.33	<0.01	3.29
Yanqing	76.25	<0.01	0.47	0.02	2.86

^a We ranked the results for spatial accessibility in descending order. Q1 means the first quartile. Q3 means the third quartile.