Enquiries about Grafana

Hi Grafana Support Team,

I am currently using Grafana version 7.1 (with PNP4Nagios v0.6.26 as an aggregator). Recently, when trying to create a dashboard which takes data from Nagios, I found that the data points are duplicated when I look at the data points from grafana.

The data points from Nagios are at 5 minute intervals. From Grafana, I see that the data points are duplicated every 1 minute interval. Is there a way to eliminate the duplicated data points?

Thank You.
Best Regards,
Jason