It's just a spreadsheet that shows the values for the new Armor 2.0 stats--what the cooldown is for each tier. It's easy enough to just see that in game, but it's handy to see it all in one place.

https://docs.google.com/spreadsheets/d/1kv9cRk234Ju8kIQECaYIQ--lHGPwFgfYHApuYJrIB1I/edit#gid=0