IND 220: Percentage of free spaces per urban land. Pamplona City Council/Iruñeko Udala.

Floor surface of free spaces/urban floor area. Area of free spaces is obtained by subtracting the area corresponding to the composite coverages 811, 812 and 813 (hull, widening and discontinuous).自由空间与城市地面区域的地面表层。自由空间的面积可通过扣除对应复合覆盖类别811、812及813（主体覆盖、拓宽区域与不连续覆盖）的面积计算得出。