What is the placard next to the Radio Channel Frequency Placard?

[Charly_Owl]

I have a bit of a trivia question for the Mossie experts among you... what is the placard next to the Radio Channel Frequencies? It lists a "L" and "R" column, which I assume to be for left and right... but apart from that I don't know what these values represent. Does anyone have an idea?

 

[Diesel_Thunder]

Shooting from the hip here, but that looks like a deviation table for the direction finder. When DF’s are calibrated, a table is made against a known transmitter bearing (the actual known bearing versus what the DF is telling you the bearing is). That way the navigator knows that if his DF is showing a signal source at say 20 degrees, he then adds or subtracts the deviation and gets the corrected bearing to the signal. 
 

During my time in the Coast Guard, this was checked at least annually on DF sets and the deviation table updated accordingly. Much more accurate (and easier) to find someone in distress when you have a corrected bearing to thier radio. 

[pocketedition]

the aircraft was made in england, so it may be in relation to tea and sandwich times.

 

edit; I would go with the answer given by Diesel_Thunder

Edited September 20, 2021 by pocketedition