Evolution of cold gas mass. We show the ratio of cold gas mass to initial cloud mass (solid line) and the ratio of the difference between converging and diverging cold gas mass to the initial cloud mass (dashed line) for the M_init = 10⁵ M_⊙ simulations. The outflow velocity increases from left to right; colours show the outflow temperature as indicated in the legend. (For equivalent plots of clouds with lower masses, see Appendix D.)