Fig. 3From: Tectonic evolution of northwestern Imbrium of the Moon that lasted in the Copernican PeriodThe CSFDs for the units. Craters 250–1000 m in diameter were used. Dashed lines indicate the diameter ranges used to fit the production function. The error bars are calculated by log (N ± \(N^{1/2}\)) / A, where N is the cumulative number of craters and A is the counted area. The CSFDs are for Units A, B, C, D, E and F Back to article page