Potential number ofsources in HUDF
z  Total dN/dz   V dN/dz   i dN/dz    z dN/dz
1     26,800      23,600    23,900     13,900
2     17,000      17,500    15,800      7,700
3     10,700      11,500    11,000      5,300
4      7,000       5,900     7,700      3,700
5      4,900         930     4,800      2,600
6      3,600           0       490      1,600
7      2,700           0         0        120