This is the 754th most frequent Slovenian word.
povprečju
"Average."
The word 'povprečju' here indicates the average, calculated mean value regarding a common activity like eating.
Na povprečju ljudje jedo tri obroke na dan.
On average, people eat three meals per day.
In this sentence, 'povprečju' is used to describe the typical temperature value taken as the mean.
Temperatura v tej regiji je v povprečju 20 stopinj Celzija.
The temperature in this region is on average 20 degrees Celsius.
Here, 'povprečju' sets the average frequency of training events usually observed.