GS_raw = wS×(Shares/Reach) + wC×(Comments/Reach) + wF×(Follows/Reach)
+ wK×(WebsiteTaps/Reach) + wSv×(Saves/Reach) + wL×(Likes/Reach)
+ wR×clip(Reach/AvgReach,0.5–1.5) + wImp×clip(Impressions/Reach,0.5–2.0)
GS = GS_raw x Scale (default 1000)
GP_post = round( (GS / Scale) x Accounts reached x g(Impressions/Reach) x g_aud ) g(Impr/Reach): frequency quality (1.0: 1.0-1.5; 0.9: 0.8-1.0 or 1.5-2.0; 0.8: others) g_aud: audience weighting adjusted by Non-followers % (default +/-10%)