About the ratio of SR-RAW dataset

[billhhh]

Thanks for sharing your great work! I have some questions w.r.t the SR-RAW dataset.

(1) May I know the corresponding ratio of each data pair?
For example, in ./test/00134, there are 7 images. Are they corresponding to focal length in the Fig 2 of the paper? In fig2, there are two 70mm focal length settings. Any difference between these two settings? What about some folder with 6 images. What are the settings (focal length etc) of these examples?

(2) Additionally, may I know there are some descriptions about the SR-RAW dataset (folder structure explanation and file description) other than the paper?

Really appreciate your help!
Best