Web lists-archives.com

MATE Temperature Sensor applet on Stretch

Some time back on a different laptop and an older release (Wheezy???) I had run something which displayed temperatures on the Panel.

Today I searched Synaptic for "mate sensors" and then installed "MATE Sensors Applet". It runs.

HOWEVER, seven of the twelve values displayed are 0 degrees C. I assume that only means that there is physically no sensor to monitor on this laptop. In the app I recall using had an option to not display meaningless values. I can't find documentation or hints that this is possible.

Is it?
Any suggestions as to what I might have been using? {I have used only Gnome2 and MATE as DE.}