[atlas] Data in the Internet Maps

Hi Atlas people, <I did not receive mails from this list months ago. I hope it still works.> I’m writing to ask about the Data repo in the intnernet maps. For example I would like to study the DNS root RTT statistics in this page : https://atlas.ripe.net/results/maps/rtt-fixed/ Where and How should I get the access to this data. Best regards, Davey