Questions about downsampling

[amssljc]

Hi, If I downsample with the ratio 1/16, the max value will also be as 1/16 fold as original matrix. However, the max value of Figure 2a in your paper is 210+, while the max value of downsampled matrix is 50+. The ratio is about 1/4, which is not consistent with 1/16. Could you please help me? I'm confused a lot! Thanks!