Evolution of the mass and area. The full black line represents the mass of the condensations (n_H > 10¹⁰ cm⁻³) in the whole domain but without the TR (everything above 4 Mm) in the steady and in the stochastic heating case, top and bottom panels respectively. The blue line, for the steady heating case represents the mass of the main prominence body, determined by the same number density threshold and in an area as marked by the white box in Fig. 2. The dashed lines show the same but for the area of the condensations.