The screenshot shows the user interface of Phylo-mLogo. The sequence logos of the influenza virus HA isolates from New York for the whole periods and different influenza seasons, Nov. 1998–Mar.1999, Oct.1999–Mar. 2000, Nov. 2001–Mar. 2002, Feb.–May. 2003, and Oct. 2003–Feb. 2004. In the Viewing Section, the sequence logo shown in Root Logo View represents the frequencies of the amino acids over the whole aligned sequences while those shown in Clade Logos Views demonstrate the logos for the sequences belonging to the same clade.