Anyone know the formula for Spirit regen?

[russ]

The forumla for priests is :

mana regen/tick = (spirit/4)+13

A tick is every two seconds, and is serverside, not clientside.

For other caster classes, including mages, shaman, and paladins (I believe):

mana regen/tick = (spirit/4)+x

For druids:

mana regen/tick = (spirit/5)+x

I believe health regen is around spirit/10 or spirit/9 plus a constant. Not really sure.