For the first time, the KM3NeT and Pierre Auger Collaborations are offering a call to access the data of these instruments. You can find the details of both calls on their respective pages:
KM3NeT Pierre Auger Observatory
Following proposal submission, the Program Committee (PC) will evaluate proposals, with this cycle’s review conducted by a joint KM3NeT+Pierre Auger PC. This includes several members from both KM3NeT and the Pierre Auger Collaborations as well as from other related experiments.