It's hard to tell what the 2nd column on the reservse dependency page means

Looking at https://lib.rs/crates/itoa/rev, it took me quite a while to understand what the number in the 2nd column of that table means.

First of all it is not very clear that "with downloads and own rev deps" refers to the first two columns. It'd be great to have a tooltip appear when hovering that number, explaining that this is the number of reverse deps of that crate. (I know tooltips won't help for touchscreens, but at least they will help for users with more versatile input devices.)
Secondly, the number shown here for, e.g., 'time', does not match any of the numbers shown on https://lib.rs/crates/time/rev. So it is quite unclear what exactly is being counted here. Eventually someone figured out that this is the sum of all direct dependencies (runtime, build, dev), but that is not at all clear.

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