Inconsistency of Grafana Noise data = gaps with no data


Last night from 01:00h to about 03:00h UTC the Grafana page (clickhouse database, doesn't show any noise date
Later this night periodically the noisedata is missing for shorter periods of time...
It seems that this is happening worldwide..

Is there a problem with one of the servers, which causes the data loss ?
Or is it a similar problem like theĀ  DoS attack we faced some weeks ago ?

What happens ?!

The problem is easily visible on

Ulli, ON5KQ

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