They are just telling you what your voltage currently is, compared to what it should be (give or take some millivolts)
The 12v rail is running at 12.22 (perfect)
The 5v rail is running at 5.187 (perfect)
The 3.3v rail is running at 3.472 (perfect)
And you Vcore (cpu) is running at 1.568 (I assume fine, since if you OCed your voltage will be different from other machines)
the 12, 5, and 3.3 volt rails are just the power on your psu. They all add up and are used to power your components, to whatever their power may be.
The Vcore, like I said, is your cpu.