This is the ski-jumping calendar for men competitions in february 2017.
Is it possible to view several type of competitions:
What does those abbreviations means?
HS - Hill Size.
The numbers mean:
There are also small and medium hills.
In the international competition rules of ski jumping, on page 47, they define "hill size" as:
HS the measured distance (Hill Size) from the edge to the takeoff to the end of the landing area