Predicted histogram of median dust continuum fluxes in the ALMA band 7 (0.8–1.1 mm) for the B-drop sample from models assuming different star formation histories. The predictions are plotted for modified black bodies with T_d = 35 K and β = 2. Same color coding as in Fig. 22. The vertical lines indicate the continuum sensitivity for an integration time of 60 s with the full array (long dashed), and with 32 antennae available for the ALMA cycle 1 (short dashed). The upper axis indicates the corresponding IR luminosity. Changes of the dust temperature by  ± 10 K correspond to a change of the flux by a factor  ~2.5−2.8 approximately.