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Table 14 Grotto deterioration degree levels

From: A quantitative evaluation based on an analytic hierarchy process for the deterioration degree of the Guangyuan Thousand-Buddha grotto from the Tang Dynasty in Sichuan, China

Preserve condition Deterioration degree value Number of grottos Total grotto number of the level
Good (0–0.2] NO.211, NO.213, NO.805, NO.806 4
Moderate (0.2 ~ 0.4] NO.86, NO.214. NO.400, NO.513, NO.535, NO.689 6
Poor (0.4 ~ 0.6] / 0
Very poor (0.6 ~ 0.8] NO.512 1