Pokemon Gold - Headbutt Locations

In each section, the first row indicates the occurrences of Pokemon on a 50% or 80% chance of a Pokemon appearing when you headbutt a tree; the second row, on a 10% chance.

Forest (Azalea Town, Lake of Rage, Ilex Forest, Routes 26, 27, 34, 35, 36, 37, 38, 39) (high density)

[50%]L10  CATERPIE    [15%]L10  CATERPIE    [15%]L10  METAPOD     [10%]L10  EXEGGCUTE   [5%]L10  EXEGGCUTE   [5%]L10  BUTTERFREE  
[50%]L10  CATERPIE    [15%]L10  PINECO      [15%]L10  PINECO      [10%]L10  EXEGGCUTE   [5%]L10  EXEGGCUTE   [5%]L10  BUTTERFREE  

Mountain (Routes 29, 30, 31, 32, 33, 42, 43, 44, 45, 46) (high density)

[50%]L10  SPEAROW     [15%]L10  SPEAROW     [15%]L10  SPEAROW     [10%]L10  AIPOM       [5%]L10  AIPOM       [5%]L10  AIPOM       
[50%]L10  SPEAROW     [15%]L10  HERACROSS   [15%]L10  HERACROSS   [10%]L10  AIPOM       [5%]L10  AIPOM       [5%]L10  AIPOM