AMOEBA procedures and functions are used to fit parameters of hierarchical stellar system models to data from interferometry, astrometry, spectroscopy, and photometry. The data from the latter three methods are read from formatted ASCII files and stored in structure arrays. Interferometric data, however, can only be stored in the scans structure one night at a time due to the complexity of the data and the varying configurations. Therefore, the different nights read by load_interferometry are buffered by a C-function (nightbuffer).