Undervolting in ethOS

So i changed the timings on my cards (rx 470 4gb) in a Windows 10/Claymore environment, then I booted back to ethOS and adjusted my core and memory values at runtime in my local config and tweaked them until all cards were happy (settings below).

cor xxxx 1150 1150 1150 1130 1130 1140
mem xxx 2000 2000 2000 1900 1900 1950

They are running great and I want to undervolt them, which I found some suggested settings in another post:

1130/1900 @ 900mV-920mV
1140/1950 @ 940mV-950mV
1150/2000 @ 950mV-970mv

So the example voltage setting in ethOS looks like the following:

vlt xxxx 1.118 1.118 1.118 1.118 0 1.118

Show what would the setting be to undervolt the 1130/1900, would it be .920?

Thanks.