[ntuple] improve readability
[ntuple] improve readability

karies/root,olifre/root,root-mirror/root,karies/root,olifre/root,olifre/root,olifre/root,olifre/root,root-mirror/root,root-mirror/root,root-mirror/root,olifre/root,root-mirror/root,karies/root,root-mirror/root,olifre/root,olifre/root,root-mirror/root,olifre/root,olifre/root,root-mirror/root,karies/root,karies/root,karies/root,root-mirror/root,karies/root,karies/root,karies/root,karies/root,olifre/root,root-mirror/root,karies/root,root-mirror/root