The search statistics section contains the information for the target database, the contants used in Expect value calculation, scoring matrix used, the hits to database at various stage of the search, the X and S cutoff settings. Due to query concatenation, individual query specific parameters, marked by * in the figure below, are not listed for batch searches.
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Figure 6.1.2 Statistics Section from standalone blastn searches.
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Note:
A - Target database information
B - Statistical parameters used in Expect value calculation
C - Matrix used in the search
D - Search specific statistics for search with a single query
E - Thresholds for X-dropoff and cutoff scores, user adjustable:
X1, X-dropoff for un-gapped extension X2, X-dropoff for first gapped extension X3, X-dropoff for final gapped extension with trace back
S1, cutoff score for maximal-scoring segment (MSP) S2, cutoff score for multiple HSPs. Pairwise alignments below the cutoff are ignored
* - Items not provided for searching with multiple queries (due to query concatenation)