Threshold	# Recognised  # Not Recognised (False negatives)  Total

10000       4            29                             33
20000       9            24                             33
30000       11           22                             33
40000       15           18                             33
50000       18           15                             33
60000       20           13                             33
70000       23           10                             33
80000       26           7                              33
90000       28           5                              33
100000      29           4                              33