What does "Idle Wake Ups" indicate in the Mavericks activity monitor?

Mavericks performs some advanced timer coalescing to reduce power consumption. Apple claims up to a 72% reduction in CPU activity. I think (but am still searching for written proof) that Idle Wake Ups is the number of times the CPU leaves the idle-state per quanta of time. I'm not sure what that quanta is (probably one second).

You can read more about Maverick's power savings at Ars Technica's excellent review of OSX 10.9 (page 12, "Energy Savings").

According to Intel an Idle Wake Up is the

Number of times a thread caused the system to wake up from idleness to begin executing the thread.

Source: Idle Wake-ups (Intel.com)