dVTB wrote:Would you mind to explain what all numbers and symbols mean? What does the 'b' mean and what are the three numbers behind the singles?

I didn't know this is so interesting! Here are the explanations:
B = UK # 1 single/album
b = UK Top 10 single/album
U = US # 1 single/album
u = US Top 10 single/album
The weeks ("vk") indicate, how many weeks that album has spent on the charts.
The first album column:
K = compilation album
R = remix album
The second album column indicates the highest placing of that album on the charts.
The third album column indicates how many weeks the album has spent as number one.
The "buttons" for the singles have been collected from the "Rumba" magazine, for a quick view of the most successful hits.
The first singles column indicates the highest placing on the Jukebox chart (1975-89) or on the Top 50 (from 1992 onwards).
The second singles column indicates the placing on the singles sales chart Top 20.
The third singles column indicates the placing on the radio chart.
dVTB wrote:Also: why are the first three singles from Very listed as 'EMI' releases?
I have no idea of that!