Explanation for time interval: low min time interval creating duplicate rows in prometheus table

hi there!

so i’ve created a table in grafana with prometheus as my data source, and when the min. time interval is 20s, the table produces various duplicated rows.

for example, it shows an additional row every 20s (taken from the Time table)

can anyone provide an explanation as to why this might be? i read the info for it:

( A lower limit for the auto group by time interval. Recommended to be set to write frequency, for example 1m if your data is written every minute. Access auto interval via variable $__interval for time range string and $__interval_ms for numeric variable that can be used in math expressions.)

however i’m not sure what this means. is it the time interval for prometheus to grab that data?

any sort of explanation would be greatly appreciated