Comparison between average modelled growth and analytically expected growth of ice particles. The final particle size as a function of initial particle size is shown for 2000 ice superparticles distributed evenly in 20 different initial size bins over the range R/R₁ =  [0,1] , and with 20 000 vapour superparticles added. Black crosses show modelled values and blue stars show the average growth in each size bin. The modelled average size roughly agrees with the analytical value, shown as a blue line. Red lines denote expected size for a number of condensation events between 0 (lower line) and 10 (upper line).