This is the distance to frontier score of the indicator Quality of land administration index (that ranges from 0 to 30, with higher values indicating better quality of the land administration system)
The distance to frontier score helps assess the absolute level of regulatory performance over time. It measures the distance of each economy to the “frontier,” which represents the best performance observed on each of the indicators across all economies in the Doing Business sample since 2005. One can both see the gap between a particular economy’s performance and the best performance at any point in time and assess the absolute change in the economy’s regulatory environment over time as measured by Doing Business. An economy’s distance to frontier is reflected on a scale from 0 to 100, where 0 represents the lowest performance and 100 represents the frontier.