Relative abundance of several species in the midplane of the disk where T < 300 K, at t = t_ff + 10, 50, 100, and 150 kyr (colored bars). The height of the colored bar indicates the volume-averaged abundance over the midplane of the disk. The vertical black lines extends from the minimum to the maximum value. The horizontal black lines represent a median value above (and below) which 50% of the volume of the gas stands. The black bars represent the initial abundances, and are not displayed if the initial abundances are lower than 10⁻¹⁴.