G'day Tom,
Na mate that figure is the total number of nuggets found for all those days of detecting with the 3 detectors.
Wouldn't we all wish to detect a 164 oz piece or even a total of 164 ozs over a weekend?
I see your location is Canada so I assume you may not have experienced temperatures we are reaching up to at the moment above 40 degrees C (or above 100 + degrees F) although those in the desert areas of USA would. I have not been out for a detect since the end of August last year, now waiting for a cool day to appear over a weekend.