Have anyone figured out how it scales with % missing health?

For those who dont know what im talking about here is a handy link, http://leagueoflegends.wikia.com/wik...ree_Mastery%29

Asume that we take 3/3 in that mastery.
Is it as simple as 0 hp5 at 100% hp, 2 hp5 at 75% hp, 4hp5 at 50% hp and 6 hp5 at 25% hp?

Anyone know?

Edit: After some ingame testing i got some rough* percentage of maximum hp. percentages of when what hp5 bonus kicks in.
Maximum health in test was 522.
1hp5 kicks in at 486 hp. This is at 93% hp.
2hp5 kicks in at 390 hp. This is at 74% hp.
3hp5 kicks in at 310 hp. This is at 59% hp.
4hp5 kicks in at 224 hp. This is at 43% hp.
5hp5 kicks in at 137 hp. This is at 26% hp.
6hp5 kicks in at 56 hp. This is at 10% hp.

*(56 is obviously not 10% of 522, but about 10.7%)

So there you have it people

Bump.

Ive been wondering the same, it really matters and isnt explained

as the page says, you need to basically be dead for it to be six. you can kinda assume the others. not that important at all.

it gives 6 hp/5 when u are missing 100% health, u can easily check this when just creating a costum game with mundo and activate w in base.

+0 HP/5 at 100%
+6 HP/5 at 10%

Just did some testing ingame. With a total hp of 522.

1hp5 kicks in at 486 hp. This is at 93% hp.
2hp5 kicks in at 390 hp. This is at 74% hp.
3hp5 kicks in at 310 hp. This is at 59% hp.
4hp5 kicks in at 224 hp. This is at 43% hp.
5hp5 kicks in at 137 hp. This is at 26% hp.
6hp5 kicks in at 56 hp. This is at 10% hp.

Edit: added a rough (56 is obviously not 10% of 522, but about 10.7%) percentage of maximum hp.