Table 1. Eight imaginary populations are considered.

Each population consists of 49 rare units. Those rare units are distributed among 12 PSUs which are resembling the buttercup population with different distribution of rare units. The numbers inside the table are the number of rare units in each PSU. The relative expected number of observed rare units, RN_ATIS(ν_r) are computed for each population.

Population	1	2	3	4	5	6	7	8
PSU
1	25	20	20	20	20	10	5	4
2	24	19	19	19	10	10	5	4
3	0	10	5	2	10	10	5	4
4	0	0	5	2	9	10	5	4
5	0	0	0	2	0	9	5	4
6	0	0	0	2	0	0	5	4
7	0	0	0	2	0	0	5	4
8	0	0	0	0	0	0	5	4
9	0	0	0	0	0	0	5	4
10	0	0	0	0	0	0	4	4
11	0	0	0	0	0	0	0	4
12	0	0	0	0	0	0	0	5
RNATIS(νr)	4.8041	2.2735	2.2406	2.2274	1.9008	1.2823	1.0324	1.0001