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. 2008 Apr 8;41(Pt 3):644–646. doi: 10.1107/S0021889808007966

Table 2. Parameters for the combined SnB/sieve procedure.

Parameter SnB alone SnB with sieving
Total reflections (phases) 10N 10N
Triplets 100N 100N
Peaks to select N N
SnB cycles 0.5N 0.1N
Number of sieve phases (NSP) NA 1.5N–4N
Sieve phase reduction (SPR) NA 0.15N
Minimum number of sieve phases (NSPmin) NA 0.5N

The initial set of sieve reflections is chosen utilizing a binary search for the first instance of non-origin degrees of freedom, as described in §5 of Smith et al. (2007).