Surface densities of i-dropouts vs. magnitude
z range      dN/dm/dOmega(HUDF)    dN/dm/dOmega(GOODS-N)      dN/dm/dOmega(GOODS-S)
25--26                               0.100 +/- 0.030            0.081 +/- 0.026  
26--26.5                             0.339 +/- 0.087            0.401 +/- 0.098  
26.5--27                             0.840 +/- 0.176            0.915 +/- 0.189  
25--26.7       0.214 +/- 0.113   
26.7--27.7     2.000 +/- 0.545   
27.7--28.746   2.434 +/- 0.619   

Total surface brightness (HUDF only): 25.6 mag/sq. arcmin at ~1400 A