I am Joe Warrick and I developed the Di-Namix (pronounced like "dynamics") music chart in August of 1991 as a means of tracking hit music that I was collecting for my DJ service. I have published a chart every week since then! Each week's chart is tabulated by positioning songs according to subjective criteria, based on my personal thoughts of each song's success. Radio airplay data is monitored and plays a role in determining the top hits of the week. These factors allow the Di-Namix chart to have a unique ranking of songs, while remaining somewhat consistent with the currentnational charts, and the playlists of Mainstream Top 40 (CHR) stations.