User blog comment:Dragonjet/KanColle English DB/@comment-24835439-20140419151825/@comment-1820055-20140420011751

thanks ill put more thought into this later as well, but i like the general idea. wherein

reports of X /(No drops + didn't notice + reports of no X)

whch just means,

rate of X on node Y = reports of X on node Y / all reports that passed through node Y