node_tuples_list: spatial query of connectors queries on a shorter, more relevant list of connector IDs, only those with the queried Z coordinate.
node_tuples_list: spatial query of connectors queries on a shorter, more relevant
list of connector IDs, only those with the queried Z coordinate.

fzadow/CATMAID,htem/CATMAID,fzadow/CATMAID,fzadow/CATMAID,htem/CATMAID,fzadow/CATMAID,htem/CATMAID,htem/CATMAID