[Gimp-user] Question about displayed values on Histogram window

[北嶋 凌 <kitashima webtec co jp>]

Hello.
I use GIMP ver.2.10.10.0 on Windows 7.

I have a question about Histogram window.
(Windows > Dockable Dialogs > Histogram)

There are "Mean","Std dev", "Median" values displayed,
but the values are between 0 and 1.
As far as I can remember, they used to be between 0 and 255.

e.g.
expect value:    Red=0, Green=160,   Blue=233
displayed value: Red=0, Green=0.627, Blue=0.914

Is this because specification has changed, 
or because I have changed some settings?

If this can be fixed by the settings, would you tell me how to set?

Best regards,

Ryo Kitashima