Intermediate procedure results for classification of crater degradation levels.

In the crater degradation classification process, we have three researchers who will classify the impact craters into degradation levels. First, the three researchers will independently classify the crater degradation level (this is the 1st round of crater degradation level classification), and the crater degradation level will be determined only if at least two researchers have the same result on the crater degradation level classification, otherwise, the crater degradation level classification is considered doubtful and requires re-classification.

After two rounds of reclassifying craters with doubtful crater degradation levels, we obtained the degradation levels of all craters.The data contains three tables, each representing the results of the first, second, and third rounds of crater degradation classification by three researchers. The craters with a confirmed degradation level are marked with "yes" and those with a doubted level are marked with "doubt".In the table, "1", "2", "3" and "4" represent the craters with fresh, slightly degraded, moderately degraded and severely degraded degradation levels, respectively.