Many boulder safety grades are missing

[rytheranderson]

Hello,

Looking at the openbeta-usa-routes-aug-2020 dataset, it seems a lot (maybe the majority) of bouldering safety grades are missing. I recently pulled a bunch of climb data from MP and I have been comparing that to the data stored here. Looks like everything matches very well. Except, for the 21382 boulders common between this set and mine, I find that 1369 have safety ratings (PG/PG13, R, or X), but only 63 of the openbeta-usa-routes-aug-2020 boulders have safety ratings.

This can be seen in the attached .csv, my safety rating is given as "safety_y" and that from the dataset here is given as "safety_x". I looked up a number of these boulders (~50) by hand and found the safety_y rating to be correct for all these checks.

safety_check.csv