Participación de Rivera, Alberto:

Individual Calculations January 2016:
 IRT Navideno Ciudad de Luces Medellin 2015 Medellin COL 2015-12-10
 2207 2344 4.50 7 -0.19 10 -1.90 
  Rosero Zapata, Luis Fernando 2034 COL1.0010.14101.40 
  Pedraza, Yonnattanth 2176 COL0.501-0.2210-2.20 
  Escobar Medina, Andres F 2227 COL0.001-0.6610-6.60 
  Rios Parra, Juan Fernando 2054 COL1.0010.16101.60 
  Contreras, Henry f2203 COL1.0010.31103.10 
  Castaneda, Jhon David 2228 COL1.0010.34103.40 
  Almeida Quintana, Omar g2527 CUB0.001-0.2610-2.60 

Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change)