Model fits (black thick lines) for subsequent quotient spectra (gray thin lines) of the 1989 dataset, spectra 1−7. The top label gives the sequence numbers of the two spectra of the quotient, followed by their time interval in hours. The geometry, which is depicted at the beginning of each series, is used for all figures in the sequence and is shown for the epoch of the first spectrum of the second panel in the series. The star rotates with the blobs staying in their same relative position. The first and last figures of each series (except the very first and very last for obvious reasons) contain intentionally failed fits to signify the extent over which the fitted configuration, carried around by the rotation, survives. In this dataset most configurations have short lifetimes, unlike the other datasets. The fits continue in the next figure.