From standup discussion Thurs 4th Sep 2025: ### Use case What are you trying to accomplish? Sometimes there may already be a way to do what you need. Several model directories have obs_seq.out with one or a few observations that were used to test model_interpolate. ### Is your feature request related to a problem? Possibly better to have a set of known obs_seq.out for various tests of models. ### Describe your preferred solution Atmosphere obs_seq Ocean obs_seq ... ### Describe any alternatives you have considered The alternative is to continue adding (temporary or added to repo) obs_seq.out when people do model tests / add new models.