Core Elementalist Attunements:
Recharge should be 10sec for last Element and 1.5sec for all other.
Weaver Attunements:
Recharge should be 4sec for last Element and 1.5sec for all other.
Since May 25th Update:
Recharge for Weaver Attunements are 4sec for last Element and 4sec for all other.
All in PvE