| Allowed Value | Details | 
|---|---|
| 1 | Length of the shorter sequence | 
| 2 | Number of aligned positions (including gaps) | 
| 3 | Number of aligned residue pairs (not including the gaps) | 
| 4 | Arithmetic mean sequence length | 
| 5 | Other | 
| Allowed Value | Details | 
|---|---|
| 1 | Length of the shorter sequence | 
| 2 | Number of aligned positions (including gaps) | 
| 3 | Number of aligned residue pairs (not including the gaps) | 
| 4 | Arithmetic mean sequence length | 
| 5 | Other |